{
  "api": {
    "Element": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element",
        "spec_url": [
          "https://dom.spec.whatwg.org/#interface-element",
          "https://w3c.github.io/pointerevents/#extensions-to-the-element-interface",
          "https://fullscreen.spec.whatwg.org/#api",
          "https://w3c.github.io/DOM-Parsing/#extensions-to-the-element-interface",
          "https://drafts.csswg.org/cssom-view/#extension-to-the-element-interface"
        ],
        "tags": [
          "web-features:dom"
        ],
        "support": {
          "chrome": {
            "version_added": "1"
          },
          "chrome_android": "mirror",
          "edge": {
            "version_added": "12"
          },
          "firefox": {
            "version_added": "1"
          },
          "firefox_android": "mirror",
          "ie": {
            "version_added": "4"
          },
          "oculus": "mirror",
          "opera": {
            "version_added": "8"
          },
          "opera_android": {
            "version_added": "10.1"
          },
          "safari": {
            "version_added": "1"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": {
            "version_added": "1"
          },
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "DOMActivate_event": {
        "__compat": {
          "description": "`DOMActivate` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/DOMActivate_event",
          "spec_url": "https://w3c.github.io/uievents/#event-type-DOMActivate",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": true
          }
        }
      },
      "DOMMouseScroll_event": {
        "__compat": {
          "description": "`DOMMouseScroll` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/DOMMouseScroll_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": true
          }
        }
      },
      "MozMousePixelScroll_event": {
        "__compat": {
          "description": "`MozMousePixelScroll` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/MozMousePixelScroll_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "6"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": true
          }
        }
      },
      "after": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/after",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-childnode-after①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "54"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "39"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "afterscriptexecute_event": {
        "__compat": {
          "description": "`afterscriptexecute` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/afterscriptexecute_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "2"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": true
          }
        }
      },
      "animate": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/animate",
          "spec_url": "https://drafts.csswg.org/web-animations-1/#dom-animatable-animate",
          "tags": [
            "web-features:web-animations"
          ],
          "support": {
            "chrome": {
              "version_added": "36"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "48"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "13.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "implicit_tofrom": {
          "__compat": {
            "description": "Implicit to/from keyframes are supported",
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/animate#implicit_tofrom_keyframes",
            "tags": [
              "web-features:web-animations"
            ],
            "support": {
              "chrome": {
                "version_added": "84"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "75"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "13.1",
                "partial_implementation": true,
                "notes": "Implementation seems somewhat buggy. More information will follow when available."
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_composite_parameter": {
          "__compat": {
            "description": "`options.composite` parameter",
            "spec_url": "https://drafts.csswg.org/web-animations-1/#dom-keyframeeffectoptions-composite",
            "tags": [
              "web-features:web-animations"
            ],
            "support": {
              "chrome": {
                "version_added": "84"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "80"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "16"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_id_parameter": {
          "__compat": {
            "description": "`options.id` parameter",
            "spec_url": "https://drafts.csswg.org/web-animations-1/#dom-keyframeanimationoptions-id",
            "tags": [
              "web-features:web-animations"
            ],
            "support": {
              "chrome": {
                "version_added": "50"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "48"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "13.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_iterationComposite_parameter": {
          "__compat": {
            "description": "`options.iterationComposite` parameter",
            "spec_url": "https://drafts.csswg.org/web-animations-2/#dom-keyframeeffectoptions-iterationcomposite",
            "tags": [
              "web-features:web-animations"
            ],
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "80"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": false
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_pseudoElement_parameter": {
          "__compat": {
            "description": "`options.pseudoElement` parameter",
            "spec_url": "https://drafts.csswg.org/web-animations-1/#dom-keyframeeffectoptions-pseudoelement",
            "tags": [
              "web-features:web-animations"
            ],
            "support": {
              "chrome": {
                "version_added": "84"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "75"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "14"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_rangeEnd_parameter": {
          "__compat": {
            "description": "`options.rangeEnd` parameter",
            "spec_url": "https://drafts.csswg.org/web-animations-2/#dom-keyframeanimationoptions-rangeend",
            "tags": [
              "web-features:web-animations"
            ],
            "support": {
              "chrome": {
                "version_added": "115"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_rangeStart_parameter": {
          "__compat": {
            "description": "`options.rangeStart` parameter",
            "spec_url": "https://drafts.csswg.org/web-animations-2/#dom-keyframeanimationoptions-rangestart",
            "tags": [
              "web-features:web-animations"
            ],
            "support": {
              "chrome": {
                "version_added": "115"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_timeline_parameter": {
          "__compat": {
            "description": "`options.timeline` parameter",
            "spec_url": "https://drafts.csswg.org/web-animations-1/#dom-keyframeanimationoptions-timeline",
            "tags": [
              "web-features:web-animations"
            ],
            "support": {
              "chrome": {
                "version_added": "85"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "16"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "animationcancel_event": {
        "__compat": {
          "description": "`animationcancel` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/animationcancel_event",
          "spec_url": "https://drafts.csswg.org/css-animations/#eventdef-globaleventhandlers-animationcancel",
          "tags": [
            "web-features:web-animations"
          ],
          "support": {
            "chrome": {
              "version_added": "83",
              "partial_implementation": true,
              "notes": "The `onanimationcancel` event handler property is not supported. To listen to this event, use `element.addEventListener('animationcancel', function() {});`. See [bug 41404325](https://crbug.com/41404325)."
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "54"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": [
              {
                "version_added": "13.1"
              },
              {
                "version_added": "12",
                "version_removed": "13.1",
                "partial_implementation": true,
                "notes": "Although the `onanimationcancel` event handler property is supported, the `animationcancel` event is never fired."
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "animationend_event": {
        "__compat": {
          "description": "`animationend` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/animationend_event",
          "spec_url": "https://drafts.csswg.org/css-animations/#eventdef-globaleventhandlers-animationend",
          "tags": [
            "web-features:web-animations"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "79"
              },
              {
                "prefix": "webkit",
                "version_added": "81"
              },
              {
                "version_added": "43",
                "version_removed": "79",
                "partial_implementation": true,
                "notes": "The `onanimationend` event handler property is not supported. To listen to this event, use `document.addEventListener('animationend', function() {});`."
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "18"
              },
              {
                "prefix": "webkit",
                "version_added": "81"
              },
              {
                "version_added": "12",
                "version_removed": "18",
                "partial_implementation": true,
                "notes": "The `onanimationend` event handler property is not supported. To listen to this event, use `document.addEventListener('animationend', function() {});`."
              }
            ],
            "firefox": [
              {
                "version_added": "51"
              },
              {
                "version_added": "5",
                "version_removed": "51",
                "partial_implementation": true,
                "notes": "The `onanimationend` event handler property is not supported. To listen to this event, use `document.addEventListener('animationend', function() {});`."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "partial_implementation": true,
              "notes": "The `onanimationend` event handler property is not supported. To listen to this event, use `document.addEventListener('animationend', function() {});`."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "9"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "animationiteration_event": {
        "__compat": {
          "description": "`animationiteration` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/animationiteration_event",
          "spec_url": "https://drafts.csswg.org/css-animations/#eventdef-globaleventhandlers-animationiteration",
          "tags": [
            "web-features:web-animations"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "79"
              },
              {
                "prefix": "webkit",
                "version_added": "81"
              },
              {
                "version_added": "43",
                "version_removed": "79",
                "partial_implementation": true,
                "notes": "The `onanimationiteration` event handler property is not supported. To listen to this event, use `document.addEventListener('animationiteration', function() {});`."
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "18"
              },
              {
                "prefix": "webkit",
                "version_added": "81"
              },
              {
                "version_added": "12",
                "version_removed": "18",
                "partial_implementation": true,
                "notes": "The `onanimationiteration` event handler property is not supported. To listen to this event, use `document.addEventListener('animationiteration', function() {});`."
              }
            ],
            "firefox": [
              {
                "version_added": "51"
              },
              {
                "version_added": "5",
                "version_removed": "51",
                "partial_implementation": true,
                "notes": "The `onanimationiteration` event handler property is not supported. To listen to this event, use `document.addEventListener('animationiteration', function() {});`."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "partial_implementation": true,
              "notes": "The `onanimationiteration` event handler property is not supported. To listen to this event, use `document.addEventListener('animationiteration', function() {});`."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "9"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "animationstart_event": {
        "__compat": {
          "description": "`animationstart` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/animationstart_event",
          "spec_url": "https://drafts.csswg.org/css-animations/#eventdef-globaleventhandlers-animationstart",
          "tags": [
            "web-features:web-animations"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "79"
              },
              {
                "prefix": "webkit",
                "version_added": "81"
              },
              {
                "version_added": "43",
                "version_removed": "79",
                "partial_implementation": true,
                "notes": "The `onanimationstart` event handler property is not supported. To listen to this event, use `document.addEventListener('animationstart', function() {});`."
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "18"
              },
              {
                "prefix": "webkit",
                "version_added": "81"
              },
              {
                "version_added": "12",
                "version_removed": "18",
                "partial_implementation": true,
                "notes": "The `onanimationstart` event handler property is not supported. To listen to this event, use `document.addEventListener('animationstart', function() {});`."
              }
            ],
            "firefox": [
              {
                "version_added": "51"
              },
              {
                "version_added": "5",
                "version_removed": "51",
                "partial_implementation": true,
                "notes": "The `onanimationstart` event handler property is not supported. To listen to this event, use `document.addEventListener('animationstart', function() {});`."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "partial_implementation": true,
              "notes": "The `onanimationstart` event handler property is not supported. To listen to this event, use `document.addEventListener('animationstart', function() {});`."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "9"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
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            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "ariaSetSize": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/ariaSetSize",
          "spec_url": "https://w3c.github.io/aria/#dom-ariamixin-ariasetsize",
          "tags": [
            "web-features:aria-attribute-reflection"
          ],
          "support": {
            "chrome": {
              "version_added": "84"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "119"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "ariaSort": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/ariaSort",
          "spec_url": "https://w3c.github.io/aria/#dom-ariamixin-ariasort",
          "tags": [
            "web-features:aria-attribute-reflection"
          ],
          "support": {
            "chrome": {
              "version_added": "81"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "119"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "ariaValueMax": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/ariaValueMax",
          "spec_url": "https://w3c.github.io/aria/#dom-ariamixin-ariavaluemax",
          "tags": [
            "web-features:aria-attribute-reflection"
          ],
          "support": {
            "chrome": {
              "version_added": "81"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "119"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "ariaValueMin": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/ariaValueMin",
          "spec_url": "https://w3c.github.io/aria/#dom-ariamixin-ariavaluemin",
          "tags": [
            "web-features:aria-attribute-reflection"
          ],
          "support": {
            "chrome": {
              "version_added": "81"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "119"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "ariaValueNow": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/ariaValueNow",
          "spec_url": "https://w3c.github.io/aria/#dom-ariamixin-ariavaluenow",
          "tags": [
            "web-features:aria-attribute-reflection"
          ],
          "support": {
            "chrome": {
              "version_added": "81"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "119"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "ariaValueText": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/ariaValueText",
          "spec_url": "https://w3c.github.io/aria/#dom-ariamixin-ariavaluetext",
          "tags": [
            "web-features:aria-attribute-reflection"
          ],
          "support": {
            "chrome": {
              "version_added": "81"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "119"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "assignedSlot": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/assignedSlot",
          "spec_url": "https://dom.spec.whatwg.org/#dom-slotable-assignedslot",
          "tags": [
            "web-features:slot"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "attachShadow": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/attachShadow",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-attachshadow",
          "tags": [
            "web-features:shadow-dom"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_clonable_parameter": {
          "__compat": {
            "description": "`options.clonable` parameter",
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/attachShadow#clonable",
            "spec_url": "https://dom.spec.whatwg.org/#dom-shadowrootinit-clonable",
            "tags": [
              "web-features:shadow-dom"
            ],
            "support": {
              "chrome": {
                "version_added": "124"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "123"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": [
                {
                  "version_added": "17.4"
                },
                {
                  "alternative_name": "cloneable",
                  "version_added": "16.4"
                }
              ],
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_delegatesFocus_parameter": {
          "__compat": {
            "description": "`options.delegatesFocus` parameter",
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/attachShadow#delegatesfocus",
            "spec_url": "https://dom.spec.whatwg.org/#dom-shadowrootinit-delegatesfocus",
            "tags": [
              "web-features:shadow-dom"
            ],
            "support": {
              "chrome": {
                "version_added": "53"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "94"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "13.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_serializable_parameter": {
          "__compat": {
            "description": "`options.serializable` parameter",
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/attachShadow#serializable",
            "spec_url": "https://dom.spec.whatwg.org/#dom-shadowrootinit-serializable",
            "tags": [
              "web-features:shadow-dom"
            ],
            "support": {
              "chrome": {
                "version_added": "125"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "128"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "18"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "attributes": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/attributes",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-attributes",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5.5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "auxclick_event": {
        "__compat": {
          "description": "`auxclick` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/auxclick_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-auxclick",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onauxclick"
          ],
          "tags": [
            "web-features:mouse-events"
          ],
          "support": {
            "chrome": {
              "version_added": "55"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "53",
              "notes": "Starting in Firefox 68, the `auxclick` event is used to trigger the _new tab on middle-click_ action; previously, this had been done with the `click` event. Apps can prevent middle-click from opening new tabs (or middle-click to paste, if that feature is enabled) by intercepting `auxclick` on links, and `auxclick` event handlers can now open popups without triggering the popup blocker."
            },
            "firefox_android": {
              "version_added": "53"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "18.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "type_pointerevent": {
          "__compat": {
            "description": "Is a `PointerEvent`",
            "tags": [
              "web-features:pointer-events-api"
            ],
            "support": {
              "chrome": {
                "version_added": "92"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "129"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "18.2"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "before": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/before",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-childnode-before①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "54"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "39"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "beforeinput_event": {
        "__compat": {
          "description": "`beforeinput` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/beforeinput_event",
          "spec_url": "https://w3c.github.io/uievents/#event-type-beforeinput",
          "tags": [
            "web-features:input-event"
          ],
          "support": {
            "chrome": {
              "version_added": "60"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "87"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "beforematch_event": {
        "__compat": {
          "description": "`beforematch` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/beforematch_event",
          "spec_url": "https://html.spec.whatwg.org/multipage/indices.html#event-beforematch",
          "tags": [
            "web-features:hidden-until-found"
          ],
          "support": {
            "chrome": {
              "version_added": "102"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "139"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "beforescriptexecute_event": {
        "__compat": {
          "description": "`beforescriptexecute` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/beforescriptexecute_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "2"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": true
          }
        }
      },
      "beforexrselect_event": {
        "__compat": {
          "description": "`beforexrselect` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/beforexrselect_event",
          "spec_url": "https://immersive-web.github.io/dom-overlays/#onbeforexrselect",
          "tags": [
            "web-features:webxr-dom-overlays"
          ],
          "support": {
            "chrome": {
              "version_added": "83"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40652382"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "blur_event": {
        "__compat": {
          "description": "`blur` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/blur_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-blur",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onblur"
          ],
          "tags": [
            "web-features:focus-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": [
              {
                "version_added": "24"
              },
              {
                "version_added": "6",
                "version_removed": "24",
                "notes": "The interface for this event is [`Event`](https://developer.mozilla.org/docs/Web/API/Event), not [`FocusEvent`](https://developer.mozilla.org/docs/Web/API/FocusEvent)."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.6"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "checkVisibility": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/checkVisibility",
          "spec_url": "https://drafts.csswg.org/cssom-view-1/#dom-element-checkvisibility",
          "tags": [
            "web-features:check-visibility"
          ],
          "support": {
            "chrome": {
              "version_added": "105"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "106"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "17.4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_checkOpacity_parameter": {
          "__compat": {
            "description": "`options.checkOpacity` parameter",
            "spec_url": "https://drafts.csswg.org/cssom-view-1/#dictdef-checkvisibilityoptions",
            "tags": [
              "web-features:check-visibility"
            ],
            "support": {
              "chrome": {
                "version_added": "105"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "106"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_checkVisibilityCSS_parameter": {
          "__compat": {
            "description": "`options.checkVisibilityCSS` parameter",
            "spec_url": "https://drafts.csswg.org/cssom-view-1/#dictdef-checkvisibilityoptions",
            "tags": [
              "web-features:check-visibility"
            ],
            "support": {
              "chrome": {
                "version_added": "105"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "106"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_contentVisibilityAuto_parameter": {
          "__compat": {
            "description": "`options.contentVisibilityAuto` parameter",
            "spec_url": "https://drafts.csswg.org/cssom-view-1/#dictdef-checkvisibilityoptions",
            "tags": [
              "web-features:check-visibility"
            ],
            "support": {
              "chrome": {
                "version_added": "121"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "122"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_opacityProperty_parameter": {
          "__compat": {
            "description": "`options.opacityProperty` parameter",
            "spec_url": "https://drafts.csswg.org/cssom-view-1/#dictdef-checkvisibilityoptions",
            "tags": [
              "web-features:check-visibility"
            ],
            "support": {
              "chrome": {
                "version_added": "121"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "122"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_visibilityProperty_parameter": {
          "__compat": {
            "description": "`options.visibilityProperty` parameter",
            "spec_url": "https://drafts.csswg.org/cssom-view-1/#dictdef-checkvisibilityoptions",
            "tags": [
              "web-features:check-visibility"
            ],
            "support": {
              "chrome": {
                "version_added": "121"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "122"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "childElementCount": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/childElementCount",
          "spec_url": "https://dom.spec.whatwg.org/#dom-parentnode-childelementcount",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "2"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3.5"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "10"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "children": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/children",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-parentnode-children①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3.5"
            },
            "firefox_android": "mirror",
            "ie": [
              {
                "version_added": "9"
              },
              {
                "version_added": "6",
                "version_removed": "9",
                "notes": "Also includes non-standard `HTMLCommentElement` nodes."
              }
            ],
            "oculus": "mirror",
            "opera": {
              "version_added": "10"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "classList": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/classList",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-classlist①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "22"
              },
              {
                "version_added": "8",
                "version_removed": "22",
                "partial_implementation": true,
                "notes": "Not supported for SVG elements."
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "16"
              },
              {
                "version_added": "12",
                "version_removed": "16",
                "partial_implementation": true,
                "notes": "Not supported for SVG elements."
              }
            ],
            "firefox": {
              "version_added": "3.6"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "partial_implementation": true,
              "notes": "Not supported for SVG elements."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.5"
            },
            "opera_android": {
              "version_added": "11.5"
            },
            "safari": [
              {
                "version_added": "7"
              },
              {
                "version_added": "6",
                "version_removed": "7",
                "partial_implementation": true,
                "notes": "Not supported for SVG elements."
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": [
              {
                "version_added": "4.4"
              },
              {
                "version_added": "3",
                "version_removed": "4.4",
                "partial_implementation": true,
                "notes": "Not supported for SVG elements."
              }
            ],
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "className": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/className",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-classname①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "22"
              },
              {
                "version_added": "1",
                "version_removed": "22",
                "partial_implementation": true,
                "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
              }
            ],
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "click_event": {
        "__compat": {
          "description": "`click` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/click_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-click",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onclick"
          ],
          "tags": [
            "web-features:mouse-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "6",
              "notes": "Beginning in Firefox 68, Firefox no longer incorrectly sends a `click` event for buttons other than the primary mouse button; previously, there were circumstances in which this would occur. One example: middle-clicking a link would send a `click` to the document's `<html>` element."
            },
            "firefox_android": {
              "version_added": "6"
            },
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.6"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "type_pointerevent": {
          "__compat": {
            "description": "Is a `PointerEvent`",
            "tags": [
              "web-features:pointer-events-api"
            ],
            "support": {
              "chrome": {
                "version_added": "92"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "129"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "18.2"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "clientHeight": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/clientHeight",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-clientheight",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "clientLeft": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/clientLeft",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-clientleft",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "clientTop": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/clientTop",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-clienttop",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "clientWidth": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/clientWidth",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-clientwidth",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "closest": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/closest",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-closest①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "41"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15"
            },
            "firefox": {
              "version_added": "35"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "6"
            },
            "safari_ios": {
              "version_added": "9"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "compositionend_event": {
        "__compat": {
          "description": "`compositionend` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/compositionend_event",
          "spec_url": "https://w3c.github.io/uievents/#event-type-compositionend",
          "tags": [
            "web-features:composition-events"
          ],
          "support": {
            "chrome": {
              "version_added": "15"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "9"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "11"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤15"
            },
            "opera_android": {
              "version_added": "≤14"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": {
              "version_added": "5"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "compositionstart_event": {
        "__compat": {
          "description": "`compositionstart` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/compositionstart_event",
          "spec_url": "https://w3c.github.io/uievents/#event-type-compositionstart",
          "tags": [
            "web-features:composition-events"
          ],
          "support": {
            "chrome": {
              "version_added": "15"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "9"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "11"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤15"
            },
            "opera_android": {
              "version_added": "≤14"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": {
              "version_added": "5"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "compositionupdate_event": {
        "__compat": {
          "description": "`compositionupdate` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/compositionupdate_event",
          "spec_url": "https://w3c.github.io/uievents/#event-type-compositionupdate",
          "tags": [
            "web-features:composition-events"
          ],
          "support": {
            "chrome": {
              "version_added": "18"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "9"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "11"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "5"
            },
            "safari_ios": {
              "version_added": "5"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "computedStyleMap": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/computedStyleMap",
          "spec_url": "https://drafts.css-houdini.org/css-typed-om/#dom-element-computedstylemap",
          "tags": [
            "web-features:css-typed-om"
          ],
          "support": {
            "chrome": {
              "version_added": "66"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false,
              "impl_url": "https://bugzil.la/1278697"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16.4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "contentvisibilityautostatechange_event": {
        "__compat": {
          "description": "`contentvisibilityautostatechange` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/contentvisibilityautostatechange_event",
          "spec_url": "https://drafts.csswg.org/css-contain/#content-visibility-auto-state-change",
          "tags": [
            "web-features:content-visibility"
          ],
          "support": {
            "chrome": {
              "version_added": "108"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": [
              {
                "version_added": "130"
              },
              {
                "version_added": "124",
                "version_removed": "130",
                "partial_implementation": true,
                "notes": "The `oncontentvisibilityautostatechange` event handler property is not supported."
              }
            ],
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "18"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "contextmenu_event": {
        "__compat": {
          "description": "`contextmenu` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/contextmenu_event",
          "spec_url": "https://w3c.github.io/uievents/#event-type-contextmenu",
          "tags": [
            "web-features:mouse-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "6"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "10.5"
            },
            "opera_android": {
              "version_added": "11.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": false,
              "impl_url": "https://webkit.org/b/213953"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "type_pointerevent": {
          "__compat": {
            "description": "Is a `PointerEvent`",
            "tags": [
              "web-features:pointer-events-api"
            ],
            "support": {
              "chrome": {
                "version_added": "92"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "129"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "18.2"
              },
              "safari_ios": {
                "version_added": false,
                "impl_url": "https://webkit.org/b/213953"
              },
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "copy_event": {
        "__compat": {
          "description": "`copy` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/copy_event",
          "spec_url": [
            "https://w3c.github.io/clipboard-apis/#clipboard-event-copy",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-oncopy"
          ],
          "tags": [
            "web-features:clipboard-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "22"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9",
              "notes": "Before Internet Explorer 9, this event is not supported via `addEventListener`; however, the event handler is supported since IE 5.5. The event can be listened to via `element.oncopy`."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "currentCSSZoom": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/currentCSSZoom",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-currentcsszoom",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "128"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "126"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "customElementRegistry": {
        "__compat": {
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-customelementregistry",
          "tags": [
            "web-features:scoped-custom-element-registries"
          ],
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "26"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "cut_event": {
        "__compat": {
          "description": "`cut` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/cut_event",
          "spec_url": [
            "https://w3c.github.io/clipboard-apis/#clipboard-event-cut",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-oncut"
          ],
          "tags": [
            "web-features:clipboard-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "22"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9",
              "notes": "Before Internet Explorer 9, this event is not supported via `addEventListener`; however, the event handler is supported since IE 5.5. The event can be listened to via `element.oncopy`."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "dblclick_event": {
        "__compat": {
          "description": "`dblclick` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/dblclick_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-dblclick",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-ondblclick"
          ],
          "tags": [
            "web-features:mouse-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "6",
              "notes": "Starting in Firefox 68, `dblclick` events are only sent for the primary mouse button, per the specification."
            },
            "firefox_android": {
              "version_added": "6"
            },
            "ie": {
              "version_added": "8"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.6"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "elementTiming": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/elementTiming",
          "spec_url": "https://w3c.github.io/element-timing/#dom-element-elementtiming",
          "tags": [
            "web-features:element-timing"
          ],
          "support": {
            "chrome": {
              "version_added": "77"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "firstElementChild": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/firstElementChild",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-parentnode-firstelementchild①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "2"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3.5"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "10"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "focus_event": {
        "__compat": {
          "description": "`focus` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/focus_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-focus",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onfocus"
          ],
          "tags": [
            "web-features:focus-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": [
              {
                "version_added": "24"
              },
              {
                "version_added": "6",
                "version_removed": "24",
                "partial_implementation": true,
                "notes": "The interface for this event is [`Event`](https://developer.mozilla.org/docs/Web/API/Event), not [`FocusEvent`](https://developer.mozilla.org/docs/Web/API/FocusEvent)."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.6"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "focusin_event": {
        "__compat": {
          "description": "`focusin` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/focusin_event",
          "spec_url": "https://w3c.github.io/uievents/#event-type-focusin",
          "tags": [
            "web-features:focus-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1",
              "partial_implementation": true,
              "notes": "The `onfocusin` event handler property is not supported. To listen to this event, use `element.addEventListener('focusin', function() {});`."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12",
              "partial_implementation": true,
              "notes": "The `onfocusin` event handler property is not supported. To listen to this event, use `element.addEventListener('focusin', function() {});`."
            },
            "firefox": {
              "version_added": "52",
              "partial_implementation": true,
              "notes": "The `onfocusin` event handler property is not supported. To listen to this event, use `element.addEventListener('focusin', function() {});`."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.6"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "focusout_event": {
        "__compat": {
          "description": "`focusout` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/focusout_event",
          "spec_url": "https://w3c.github.io/uievents/#event-type-focusout",
          "tags": [
            "web-features:focus-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1",
              "partial_implementation": true,
              "notes": "The `onfocusout` event handler property is not supported. To listen to this event, use `element.addEventListener('focusout', function() {});`."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12",
              "partial_implementation": true,
              "notes": "The `onfocusout` event handler property is not supported. To listen to this event, use `element.addEventListener('focusout', function() {});`."
            },
            "firefox": {
              "version_added": "52",
              "partial_implementation": true,
              "notes": "The `onfocusout` event handler property is not supported. To listen to this event, use `element.addEventListener('focusout', function() {});`."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.6"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "5"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "fullscreenchange_event": {
        "__compat": {
          "description": "`fullscreenchange` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/fullscreenchange_event",
          "spec_url": "https://fullscreen.spec.whatwg.org/#handler-document-onfullscreenchange",
          "tags": [
            "web-features:fullscreen"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "71"
              },
              {
                "prefix": "webkit",
                "version_added": "15"
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "79"
              },
              {
                "prefix": "webkit",
                "version_added": "12"
              },
              {
                "version_added": "12",
                "version_removed": "14"
              }
            ],
            "firefox": [
              {
                "version_added": "64"
              },
              {
                "prefix": "moz",
                "version_added": "10"
              }
            ],
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": [
              {
                "version_added": "58"
              },
              {
                "prefix": "webkit",
                "version_added": "15"
              },
              {
                "version_added": "12.1",
                "version_removed": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "50"
              },
              {
                "prefix": "webkit",
                "version_added": "14"
              },
              {
                "version_added": "12.1",
                "version_removed": "14"
              }
            ],
            "safari": [
              {
                "version_added": "16.4"
              },
              {
                "prefix": "webkit",
                "version_added": "5.1"
              }
            ],
            "safari_ios": [
              {
                "version_added": "16.4",
                "partial_implementation": true,
                "notes": [
                  "Only available on iPad, not on iPhone.",
                  "Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games."
                ]
              },
              {
                "prefix": "webkit",
                "version_added": "12",
                "partial_implementation": true,
                "notes": "Only available on iPad, not on iPhone."
              }
            ],
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "fullscreenerror_event": {
        "__compat": {
          "description": "`fullscreenerror` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/fullscreenerror_event",
          "spec_url": "https://fullscreen.spec.whatwg.org/#handler-document-onfullscreenerror",
          "tags": [
            "web-features:fullscreen"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "71"
              },
              {
                "prefix": "webkit",
                "version_added": "18"
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "79"
              },
              {
                "prefix": "webkit",
                "version_added": "12"
              },
              {
                "version_added": "12",
                "version_removed": "14"
              }
            ],
            "firefox": [
              {
                "version_added": "64"
              },
              {
                "prefix": "moz",
                "version_added": "10"
              }
            ],
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": [
              {
                "version_added": "58"
              },
              {
                "prefix": "webkit",
                "version_added": "15"
              },
              {
                "version_added": "12.1",
                "version_removed": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "50"
              },
              {
                "prefix": "webkit",
                "version_added": "14"
              },
              {
                "version_added": "12.1",
                "version_removed": "14"
              }
            ],
            "safari": [
              {
                "version_added": "16.4"
              },
              {
                "prefix": "webkit",
                "version_added": "6"
              }
            ],
            "safari_ios": [
              {
                "version_added": "16.4",
                "partial_implementation": true,
                "notes": [
                  "Only available on iPad, not on iPhone.",
                  "Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games."
                ]
              },
              {
                "prefix": "webkit",
                "version_added": "12",
                "partial_implementation": true,
                "notes": "Only available on iPad, not on iPhone."
              }
            ],
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "gesturechange_event": {
        "__compat": {
          "description": "`gesturechange` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/gesturechange_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": "2"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "gestureend_event": {
        "__compat": {
          "description": "`gestureend` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/gestureend_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": "2"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "gesturestart_event": {
        "__compat": {
          "description": "`gesturestart` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/gesturestart_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": "2"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "getAnimations": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getAnimations",
          "spec_url": "https://drafts.csswg.org/web-animations-1/#dom-animatable-getanimations",
          "tags": [
            "web-features:web-animations"
          ],
          "support": {
            "chrome": {
              "version_added": "84"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "75"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "13.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getAttribute": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getAttribute",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-getattribute①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getAttributeNames": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getAttributeNames",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-getattributenames①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "61"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "18"
            },
            "firefox": {
              "version_added": "45"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getAttributeNode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getAttributeNode",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-getattributenode",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "6"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getAttributeNodeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getAttributeNodeNS",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-getattributenodens",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getAttributeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getAttributeNS",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-getattributens①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": "Starting in Firefox 13, `null` is always returned instead of the empty string, as per the DOM4 specification. Previously, there were cases in which an empty string could be returned."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getBoundingClientRect": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getBoundingClientRect",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-getboundingclientrect",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "2"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "9.5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3.2",
              "notes": "Safari for iOS will modify the effective viewport based on the user zoom. This results in incorrect values whenever the user has zoomed."
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "2"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getBoxQuads": {
        "__compat": {
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-geometryutils-getboxquads",
          "tags": [
            "web-features:getboxquads"
          ],
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "31",
              "flags": [
                {
                  "type": "preference",
                  "name": "layout.css.getBoxQuads.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getClientRects": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getClientRects",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-getclientrects",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "2"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "9.5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "2"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getElementsByClassName": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getElementsByClassName",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-getelementsbyclassname",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "16"
              },
              {
                "version_added": "12",
                "version_removed": "16",
                "partial_implementation": true,
                "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
              }
            ],
            "firefox": {
              "version_added": "3",
              "notes": "Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflect the change in the spec."
            },
            "firefox_android": {
              "version_added": "4"
            },
            "ie": {
              "version_added": "9",
              "partial_implementation": true,
              "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "9.5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getElementsByTagName": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getElementsByTagName",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-getelementsbytagname",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1",
              "notes": "Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": "Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflect the change in the spec."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5.5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8",
              "notes": "Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change."
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1",
              "notes": "Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change."
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "all_elements_selector": {
          "__compat": {
            "description": "`getElementsByTagName(\"*\")`",
            "tags": [
              "web-features:dom"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "6"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "≤15"
              },
              "opera_android": {
                "version_added": "≤14"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "getElementsByTagNameNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getElementsByTagNameNS",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-getelementsbytagnamens",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1",
              "notes": "Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": [
                "The behavior of `element.getElementsByTagNameNS` changed between Firefox 3.5 and Firefox 3.6. In Firefox 3.5 and before, this function would automatically case-fold any queries so that a search for \"foo\" would match \"Foo\" or \"foo\". In Firefox 3.6 and later this function is now case-sensitive so that a query for \"foo\" will only match \"foo\" and not \"Foo\". For more background on this, please see the [comment from Henri Sivonen about the change](https://bugzil.la/542185#c5). You can also look at the [relevant part of the standard, which states which parts of the API are case-sensitive and which parts aren't](https://developer.mozilla.org/docs/Case_Sensitivity_in_class_and_id_Names).",
                "Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflects the spec change."
              ]
            },
            "firefox_android": {
              "version_added": "4",
              "notes": "Before Firefox 19, this method was returning a `NodeList`; it was then changed to reflects the spec change."
            },
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1",
              "notes": "Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change."
            },
            "opera_android": {
              "version_added": "≤12.1",
              "notes": "Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change."
            },
            "safari": {
              "version_added": "1",
              "notes": "Initially, this method was returning a `NodeList`; it was then changed to reflect the spec change."
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "all_elements_selector": {
          "__compat": {
            "description": "`getElementsByTagNameNS(namespaceURI, \"*\")`",
            "tags": [
              "web-features:dom"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "9"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "≤15"
              },
              "opera_android": {
                "version_added": "≤14"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "getHTML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/getHTML",
          "spec_url": "https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-element-gethtml",
          "tags": [
            "web-features:gethtml"
          ],
          "support": {
            "chrome": {
              "version_added": "125"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "128"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "18"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "escapes_lt_gt_in_attributes": {
          "__compat": {
            "description": "Serializes `<` and `>` in attributes as `&amp;lt;` and `&amp;gt;` (see [this spec issue](https://github.com/whatwg/html/issues/6235))",
            "support": {
              "chrome": {
                "version_added": "114",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "140"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "preview"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": false,
              "deprecated": false
            }
          }
        }
      },
      "gotpointercapture_event": {
        "__compat": {
          "description": "`gotpointercapture` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/gotpointercapture_event",
          "spec_url": [
            "https://w3c.github.io/pointerevents/#the-gotpointercapture-event",
            "https://w3c.github.io/pointerevents/#dom-globaleventhandlers-ongotpointercapture"
          ],
          "tags": [
            "web-features:pointer-events-api"
          ],
          "support": {
            "chrome": {
              "version_added": "57"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17"
            },
            "firefox": {
              "version_added": "59"
            },
            "firefox_android": {
              "version_added": "79"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "13"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "hasAttribute": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/hasAttribute",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-hasattribute①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "8"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "hasAttributeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/hasAttributeNS",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-hasattributens①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "hasAttributes": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/hasAttributes",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-hasattributes①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": "Before Firefox 35, it was implemented on the `Node` interface."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "8"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "hasPointerCapture": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/hasPointerCapture",
          "spec_url": "https://w3c.github.io/pointerevents/#dom-element-haspointercapture",
          "tags": [
            "web-features:pointer-events-api"
          ],
          "support": {
            "chrome": {
              "version_added": "55"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "59"
            },
            "firefox_android": {
              "version_added": "79"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "13"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "id": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/id",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-id①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "23"
              },
              {
                "version_added": "1",
                "version_removed": "23",
                "partial_implementation": true,
                "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
              }
            ],
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "innerHTML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/innerHTML",
          "spec_url": "https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-element-innerhtml",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "1"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "enforces_trusted_types": {
          "__compat": {
            "description": "Requires `TrustedHTML` instance when trusted types are enforced",
            "spec_url": "https://w3c.github.io/trusted-types/dist/spec/#dom-xss-injection-sinks",
            "tags": [
              "web-features:trusted-types"
            ],
            "support": {
              "chrome": {
                "version_added": "83"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "135",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.security.trusted_types.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "escapes_lt_gt_in_attributes": {
          "__compat": {
            "description": "Serializes `<` and `>` in attributes as `&amp;lt;` and `&amp;gt;` (see [this spec issue](https://github.com/whatwg/html/issues/6235))",
            "support": {
              "chrome": {
                "version_added": "114",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "140"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "preview"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": false,
              "deprecated": false
            }
          }
        }
      },
      "input_event": {
        "__compat": {
          "description": "`input` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/input_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-input",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-oninput"
          ],
          "tags": [
            "web-features:input-event"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "79"
              },
              {
                "version_added": "12",
                "version_removed": "79",
                "partial_implementation": true,
                "notes": "Not supported on `select`, `checkbox`, or `radio` inputs."
              }
            ],
            "firefox": {
              "version_added": "6"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9",
              "partial_implementation": true,
              "notes": "Only supports `input` of type `text` and `password`."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.6"
            },
            "opera_android": {
              "version_added": "12"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "insertAdjacentElement": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/insertAdjacentElement",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-insertadjacentelement",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "17"
              },
              {
                "version_added": "12",
                "version_removed": "17",
                "partial_implementation": true,
                "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
              }
            ],
            "firefox": {
              "version_added": "48"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "partial_implementation": true,
              "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "insertAdjacentHTML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/insertAdjacentHTML",
          "spec_url": "https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#the-insertadjacenthtml()-method",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "17"
              },
              {
                "version_added": "12",
                "version_removed": "17",
                "partial_implementation": true,
                "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
              }
            ],
            "firefox": {
              "version_added": "8"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "4",
              "partial_implementation": true,
              "notes": [
                "Before Internet Explorer 10, throws an \"Invalid target element for this operation.\" error when called on a `<table>`, `<tbody>`, `<thead>`, or `<tr>` element.",
                "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
              ]
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "enforces_trusted_types": {
          "__compat": {
            "description": "Requires `TrustedHTML` instance when trusted types are enforced",
            "spec_url": "https://w3c.github.io/trusted-types/dist/spec/#dom-xss-injection-sinks",
            "tags": [
              "web-features:trusted-types"
            ],
            "support": {
              "chrome": {
                "version_added": "83"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "135",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.security.trusted_types.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "insertAdjacentText": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/insertAdjacentText",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-insertadjacenttext",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "17"
              },
              {
                "version_added": "12",
                "version_removed": "17",
                "partial_implementation": true,
                "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
              }
            ],
            "firefox": {
              "version_added": "48"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "partial_implementation": true,
              "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "2.2"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "keydown_event": {
        "__compat": {
          "description": "`keydown` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/keydown_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-keydown",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onkeydown"
          ],
          "tags": [
            "web-features:keyboard-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "6"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "keypress_event": {
        "__compat": {
          "description": "`keypress` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/keypress_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-keypress",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onkeypress"
          ],
          "support": {
            "chrome": {
              "version_added": "1",
              "notes": "Chrome does not fire the `keypress` event for [known keyboard shortcuts](https://crbug.com/40879837#comment51). Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "6",
              "notes": "As of Firefox 65, the `keypress` event is no longer fired for [non-printable keys](https://developer.mozilla.org/docs/Web/API/KeyboardEvent/keyCode#Non-printable_keys_(function_keys)), except for the Enter key, and the Shift + Enter and Ctrl + Enter key combinations (these were kept for cross-browser compatibility purposes)."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1",
              "notes": "Opera does not fire the `keypress` event for [known keyboard shortcuts](https://crbug.com/40879837#comment51). Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts."
            },
            "opera_android": {
              "version_added": "≤12.1",
              "notes": "Opera does not fire the `keypress` event for [known keyboard shortcuts](https://crbug.com/40879837#comment51). Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts."
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "1",
              "notes": "Chrome does not fire the `keypress` event for [known keyboard shortcuts](https://crbug.com/40879837#comment51). Which keyboard shortcuts are known depends on the user's system. Use the `keydown` event to implement keyboard shortcuts."
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": true
          }
        }
      },
      "keyup_event": {
        "__compat": {
          "description": "`keyup` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/keyup_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-keyup",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onkeyup"
          ],
          "tags": [
            "web-features:keyboard-events"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
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            "webview_ios": "mirror"
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/mousewheel_event",
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            "description": "Serializes `<` and `>` in attributes as `&amp;lt;` and `&amp;gt;` (see [this spec issue](https://github.com/whatwg/html/issues/6235))",
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          "spec_url": "https://drafts.csswg.org/css-shadow-parts/#idl",
          "tags": [
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/paste_event",
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            "https://w3c.github.io/clipboard-apis/#clipboard-event-paste",
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            "firefox": {
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            },
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              "version_added": "79"
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            "opera": "mirror",
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            "firefox": {
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/pointerrawupdate_event",
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          "tags": [
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            "deprecated": false
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/pointerup_event",
          "spec_url": [
            "https://w3c.github.io/pointerevents/#the-pointerup-event",
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          "tags": [
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                "version_added": "10"
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            "oculus": "mirror",
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/prefix",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-prefix①",
          "tags": [
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/prepend",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-parentnode-prepend①",
          "tags": [
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          "support": {
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              "version_added": "54"
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            "chrome_android": "mirror",
            "edge": {
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            "firefox": {
              "version_added": "49"
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            "firefox_android": "mirror",
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/previousElementSibling",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-nondocumenttypechildnode-previouselementsibling②",
          "tags": [
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          "support": {
            "chrome": {
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            "firefox": {
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            "oculus": "mirror",
            "opera": {
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            "opera_android": {
              "version_added": "10.1"
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            "safari": {
              "version_added": "4"
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            "safari_ios": {
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            "samsunginternet_android": "mirror",
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          "status": {
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/querySelector",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-parentnode-queryselectorall①",
          "tags": [
            "web-features:dom"
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          "support": {
            "chrome": {
              "version_added": "1"
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            "chrome_android": "mirror",
            "edge": {
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            "firefox": {
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            "firefox_android": "mirror",
            "ie": [
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                "version_added": "9"
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              {
                "version_added": "8",
                "version_removed": "9",
                "partial_implementation": true,
                "notes": "`querySelector()` is supported, but only for CSS 2.1 selectors."
              }
            ],
            "oculus": "mirror",
            "opera": {
              "version_added": "10"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
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            "safari_ios": "mirror",
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          },
          "status": {
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            "standard_track": true,
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        }
      },
      "querySelectorAll": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/querySelectorAll",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-parentnode-queryselectorall①",
          "tags": [
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          "support": {
            "chrome": {
              "version_added": "1"
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            "chrome_android": "mirror",
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            "ie": [
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              {
                "version_added": "8",
                "version_removed": "9",
                "partial_implementation": true,
                "notes": "`querySelectorAll()` is supported, but only for CSS 2.1 selectors."
              }
            ],
            "oculus": "mirror",
            "opera": {
              "version_added": "10"
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            "opera_android": {
              "version_added": "10.1"
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            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "releasePointerCapture": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/releasePointerCapture",
          "spec_url": "https://w3c.github.io/pointerevents/#dom-element-releasepointercapture",
          "tags": [
            "web-features:pointer-events-api"
          ],
          "support": {
            "chrome": {
              "version_added": "55"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "59"
            },
            "firefox_android": {
              "version_added": "79"
            },
            "ie": [
              {
                "version_added": "11"
              },
              {
                "prefix": "ms",
                "version_added": "10"
              }
            ],
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "13"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "remove": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/remove",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-childnode-remove①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "24"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "23"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removeAttribute": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/removeAttribute",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-removeattribute①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12",
              "notes": "This function doesn't respect boolean attributes' default values. See [bug 12087679](https://developer.microsoft.com/microsoft-edge/platform/issues/12087679/)."
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removeAttributeNode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/removeAttributeNode",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-removeattributenode",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "6"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removeAttributeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/removeAttributeNS",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-removeattributens①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "replaceChildren": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/replaceChildren",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-parentnode-replacechildren①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "86"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "78"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "14"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "replaceWith": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/replaceWith",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-childnode-replacewith①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "54"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17"
            },
            "firefox": {
              "version_added": "49"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "39"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "requestFullscreen": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/requestFullscreen",
          "spec_url": "https://fullscreen.spec.whatwg.org/#ref-for-dom-element-requestfullscreen①",
          "tags": [
            "web-features:fullscreen"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "71"
              },
              {
                "prefix": "webkit",
                "version_added": "15"
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "79"
              },
              {
                "prefix": "webkit",
                "version_added": "12"
              },
              {
                "version_added": "12",
                "version_removed": "14"
              }
            ],
            "firefox": [
              {
                "version_added": "64"
              },
              {
                "alternative_name": "mozRequestFullScreen",
                "version_added": "9",
                "notes": "Before Firefox 44, Firefox incorrectly allowed elements inside a `<frame>` or `<object>` element to request, and to be granted, fullscreen. In Firefox 44 and onwards this has been fixed: only elements in the top-level document or in an `<iframe>` element with the `allowfullscreen` attribute can be displayed fullscreen."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "prefix": "ms",
              "version_added": "11"
            },
            "oculus": "mirror",
            "opera": [
              {
                "version_added": "58"
              },
              {
                "prefix": "webkit",
                "version_added": "15"
              },
              {
                "version_added": "12.1",
                "version_removed": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "50"
              },
              {
                "prefix": "webkit",
                "version_added": "14"
              },
              {
                "version_added": "12.1",
                "version_removed": "14"
              }
            ],
            "safari": [
              {
                "version_added": "16.4"
              },
              {
                "prefix": "webkit",
                "version_added": "5.1"
              }
            ],
            "safari_ios": [
              {
                "version_added": "16.4",
                "partial_implementation": true,
                "notes": [
                  "Only available on iPad, not on iPhone.",
                  "Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games."
                ]
              },
              {
                "prefix": "webkit",
                "version_added": "12",
                "partial_implementation": true,
                "notes": "Only available on iPad, not on iPhone. Shows an overlay button which can not be disabled."
              }
            ],
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_navigationUI_parameter": {
          "__compat": {
            "description": "`options.navigationUI` parameter",
            "spec_url": "https://fullscreen.spec.whatwg.org/#dom-fullscreenoptions-navigationui",
            "tags": [
              "web-features:fullscreen"
            ],
            "support": {
              "chrome": {
                "version_added": "71"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "16.4"
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_screen_parameter": {
          "__compat": {
            "description": "`options.screen` parameter",
            "spec_url": "https://w3c.github.io/window-management/#ref-for-dom-fullscreenoptions-screen",
            "tags": [
              "web-features:window-management"
            ],
            "support": {
              "chrome": {
                "version_added": "100"
              },
              "chrome_android": {
                "version_added": false
              },
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": false
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "returns_promise": {
          "__compat": {
            "description": "Returns a `Promise`",
            "tags": [
              "web-features:fullscreen"
            ],
            "support": {
              "chrome": {
                "version_added": "71"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "64"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "16.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": {
                "version_added": false
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "requestPointerLock": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/requestPointerLock",
          "spec_url": "https://w3c.github.io/pointerlock/#dom-element-requestpointerlock",
          "tags": [
            "web-features:pointer-lock"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "37",
                "notes": "From version 92, returns a promise instead of `undefined`. The behavior reflects [a specification change](https://github.com/w3c/pointerlock/commit/0e99fcf3daa23269bf2b019f5269a154088d2347)."
              },
              {
                "prefix": "webkit",
                "version_added": "22",
                "version_removed": "38"
              }
            ],
            "chrome_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40290045"
            },
            "edge": {
              "version_added": "13",
              "notes": "From version 92, returns a promise instead of `undefined`. The behavior reflects [a specification change](https://github.com/w3c/pointerlock/commit/0e99fcf3daa23269bf2b019f5269a154088d2347)."
            },
            "firefox": [
              {
                "version_added": "50"
              },
              {
                "prefix": "moz",
                "version_added": "14",
                "version_removed": "50"
              }
            ],
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1",
              "notes": "From version 18.4, returns a promise instead of `undefined`. The behavior reflects [a specification change](https://github.com/w3c/pointerlock/commit/0e99fcf3daa23269bf2b019f5269a154088d2347)."
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": [
              {
                "version_added": "3.0",
                "notes": "From version 16, returns a promise instead of `undefined`. The behavior reflects [a specification change](https://github.com/w3c/pointerlock/commit/0e99fcf3daa23269bf2b019f5269a154088d2347)."
              },
              {
                "prefix": "webkit",
                "version_added": "1.5",
                "version_removed": "3.0"
              }
            ],
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_unadjustedMovement_parameter": {
          "__compat": {
            "description": "`options.unadjustedMovement` parameter",
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/requestPointerLock#unadjustedmovement",
            "spec_url": "https://w3c.github.io/pointerlock/#dom-pointerlockoptions-unadjustedmovement",
            "support": {
              "chrome": {
                "version_added": "88",
                "notes": "Supported on macOS Catalina 10.15.1+, Windows, and ChromeOS. Not yet supported on Linux."
              },
              "chrome_android": {
                "version_added": false,
                "impl_url": "https://crbug.com/40290045"
              },
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "18.4"
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "role": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/role",
          "spec_url": "https://w3c.github.io/aria/#dom-ariamixin-role",
          "tags": [
            "web-features:aria-attribute-reflection"
          ],
          "support": {
            "chrome": {
              "version_added": "103"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "119"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scroll": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scroll",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-scroll",
          "tags": [
            "web-features:scroll-elements"
          ],
          "support": {
            "chrome": {
              "version_added": "61"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "36"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_behavior_parameter": {
          "__compat": {
            "description": "`options.behavior` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "14"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_left_parameter": {
          "__compat": {
            "description": "`options.left` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "10.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_top_parameter": {
          "__compat": {
            "description": "`options.top` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "10.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "scroll_event": {
        "__compat": {
          "description": "`scroll` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scroll_event",
          "spec_url": [
            "https://drafts.csswg.org/cssom-view/#eventdef-document-scroll",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onscroll"
          ],
          "tags": [
            "web-features:scroll-elements"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "6"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scrollBy": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollBy",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-scrollby",
          "tags": [
            "web-features:scroll-elements"
          ],
          "support": {
            "chrome": {
              "version_added": "61"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "36"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_behavior_parameter": {
          "__compat": {
            "description": "`options.behavior` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "14"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_left_parameter": {
          "__compat": {
            "description": "`options.left` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "10.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_top_parameter": {
          "__compat": {
            "description": "`options.top` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "10.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "scrollend_event": {
        "__compat": {
          "description": "`scrollend` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollend_event",
          "spec_url": [
            "https://drafts.csswg.org/cssom-view/#eventdef-document-scrollend",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onscrollend"
          ],
          "tags": [
            "web-features:scrollend"
          ],
          "support": {
            "chrome": {
              "version_added": "114"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "109"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false,
              "impl_url": "https://webkit.org/b/201556"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scrollHeight": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollHeight",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-scrollheight",
          "tags": [
            "web-features:scroll-elements"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": [
              {
                "version_added": "21"
              },
              {
                "version_added": "3",
                "version_removed": "21",
                "partial_implementation": true,
                "notes": "Before Firefox 21, when an element's content does not generate a vertical scrollbar, then its `scrollHeight` property is equal to its `clientHeight` property. This can mean either the content is too short to require a scrollbar or that the element has a CSS style `overflow` value of `visible` (non-scrollable)."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "notes": "In Internet Explorer 5 through 7, if padding is set, the value of `scrollHeight` is equal to the sum of the top and bottom padding. This behavior was fixed in Internet Explorer 8."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scrollIntoView": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollIntoView",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-scrollintoview",
          "tags": [
            "web-features:scroll-into-view"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "79"
              },
              {
                "version_added": "17",
                "version_removed": "79",
                "partial_implementation": true,
                "notes": "The only parameter supported is `alignToTop`."
              },
              {
                "version_added": "12",
                "version_removed": "17",
                "partial_implementation": true,
                "notes": [
                  "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement).",
                  "No support for `smooth` behavior."
                ]
              }
            ],
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "partial_implementation": true,
              "notes": [
                "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement).",
                "No support for `smooth` behavior or `center` options."
              ]
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3",
              "notes": [
                "No support for `center` option.",
                "Before Safari 15.4, there was no support for the `smooth` behavior."
              ]
            },
            "safari_ios": {
              "version_added": "1",
              "notes": [
                "No support for `center` option.",
                "Before iOS 15.4, there was no support for the `smooth` behavior."
              ]
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_container_parameter": {
          "__compat": {
            "description": "`options.container` parameter",
            "tags": [
              "web-features:scroll-into-view"
            ],
            "support": {
              "chrome": {
                "version_added": "140"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": false
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_parameter": {
          "__compat": {
            "description": "`options` parameter",
            "tags": [
              "web-features:scroll-into-view"
            ],
            "support": {
              "chrome": {
                "version_added": "61",
                "notes": "The `block` and `inline` options support the values `start`, `center`, `end`, `nearest`."
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36",
                "notes": [
                  "No support for `inline` option.",
                  "Before Firefox 58, `nearest` and `center` values for the `block` option was unsupported. See [bug 1389274](https://bugzil.la/1389274)."
                ]
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "14"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "scrollIntoViewIfNeeded": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollIntoViewIfNeeded",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false,
              "impl_url": "https://bugzil.la/403510"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "scrollLeft": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollLeft",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-scrollleft",
          "tags": [
            "web-features:scroll-elements"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "86"
              },
              {
                "version_added": "1",
                "version_removed": "86",
                "notes": "For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See [bug 41319147](https://crbug.com/41319147)."
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "86"
              },
              {
                "version_added": "12",
                "version_removed": "86",
                "notes": "For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See [bug 41319147](https://crbug.com/41319147)."
              }
            ],
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "notes": "For right-to-left elements, this property uses 100-0 (most left to most right) instead of negative values."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scrollLeftMax": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollLeftMax",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "16"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "scrollsnapchange_event": {
        "__compat": {
          "description": "`scrollsnapchange` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollsnapchange_event",
          "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchange",
          "tags": [
            "web-features:scroll-snap-events"
          ],
          "support": {
            "chrome": {
              "version_added": "129"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false,
              "impl_url": "https://bugzil.la/1843961"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scrollsnapchanging_event": {
        "__compat": {
          "description": "`scrollsnapchanging` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollsnapchanging_event",
          "spec_url": "https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchanging",
          "tags": [
            "web-features:scroll-snap-events"
          ],
          "support": {
            "chrome": {
              "version_added": "129"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false,
              "impl_url": "https://bugzil.la/1843961"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scrollTo": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollTo",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-scrollto",
          "tags": [
            "web-features:scroll-elements"
          ],
          "support": {
            "chrome": {
              "version_added": "61"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "36"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_behavior_parameter": {
          "__compat": {
            "description": "`options.behavior` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "14"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_left_parameter": {
          "__compat": {
            "description": "`options.left` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "10.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_top_parameter": {
          "__compat": {
            "description": "`options.top` parameter",
            "tags": [
              "web-features:scroll-elements"
            ],
            "support": {
              "chrome": {
                "version_added": "61"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "36"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "10.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "scrollTop": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollTop",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-scrolltop",
          "tags": [
            "web-features:scroll-elements"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scrollTopMax": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollTopMax",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "16"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "scrollWidth": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/scrollWidth",
          "spec_url": "https://drafts.csswg.org/cssom-view/#dom-element-scrollwidth",
          "tags": [
            "web-features:scroll-elements"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "notes": "In Internet Explorer 5 through 7, if padding is set, the value of `scrollWidth` is equal to the sum of the left and right padding. This behavior was fixed in Internet Explorer 8."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "securitypolicyviolation_event": {
        "__compat": {
          "description": "`securitypolicyviolation` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/securitypolicyviolation_event",
          "spec_url": [
            "https://w3c.github.io/webappsec-csp/#eventdef-globaleventhandlers-securitypolicyviolation",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onsecuritypolicyviolation"
          ],
          "tags": [
            "web-features:csp"
          ],
          "support": {
            "chrome": {
              "version_added": "41"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15"
            },
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setAttribute": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setAttribute",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-setattribute①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "notes": "In Internet Explorer 7 and earlier, `setAttribute` doesn't set styles and removes events when you try to set them."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setAttributeNode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setAttributeNode",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-setattributenode",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "6"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setAttributeNodeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setAttributeNodeNS",
          "spec_url": "https://dom.spec.whatwg.org/#dom-element-setattributenodens",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12",
              "notes": "Returns a `ClientRectList` with [`ClientRect`](https://docs.microsoft.com/en-us/previous-versions/hh826029(v=vs.85)) objects (which do not contain `x` and `y` properties) instead of [`DOMRect`](https://developer.mozilla.org/docs/Web/API/DOMRect) objects."
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9",
              "notes": "Returns a `ClientRectList` with [`ClientRect`](https://docs.microsoft.com/en-us/previous-versions/hh826029(v=vs.85)) objects (which do not contain `x` and `y` properties) instead of [`DOMRect`](https://developer.mozilla.org/docs/Web/API/DOMRect) objects."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setAttributeNS": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setAttributeNS",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-setattributens①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setCapture": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setCapture",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12",
              "version_removed": "79"
            },
            "firefox": {
              "version_added": "4"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "notes": "The `retargetToElement` parameter to `Element.setCapture()` was introduced in Internet Explorer 5.5."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": true
          }
        }
      },
      "setHTML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setHTML",
          "spec_url": "https://wicg.github.io/sanitizer-api/#dom-element-sethtml",
          "tags": [
            "web-features:sanitizer"
          ],
          "support": {
            "chrome": {
              "version_added": false,
              "notes": "Chrome 105 to Chrome 118 (inclusive) supported this method with a significantly different specification."
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "138",
              "flags": [
                {
                  "type": "preference",
                  "name": "dom.security.sanitizer.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setHTMLUnsafe": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setHTMLUnsafe",
          "spec_url": "https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-element-sethtmlunsafe",
          "tags": [
            "web-features:parse-html-unsafe"
          ],
          "support": {
            "chrome": {
              "version_added": "124"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "123"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": [
              {
                "version_added": "26"
              },
              {
                "version_added": "17.4",
                "version_removed": "26",
                "partial_implementation": true,
                "notes": "If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and `connectedCallback()` methods are not called ([bug 296420](https://webkit.org/b/296420))."
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "enforces_trusted_types": {
          "__compat": {
            "description": "Requires `TrustedHTML` instance when trusted types are enforced",
            "spec_url": "https://w3c.github.io/trusted-types/dist/spec/#dom-xss-injection-sinks",
            "tags": [
              "web-features:trusted-types"
            ],
            "support": {
              "chrome": {
                "version_added": "124"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "135",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.security.trusted_types.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_sanitizer_parameter": {
          "__compat": {
            "description": "`options.sanitizer` parameter",
            "spec_url": "https://wicg.github.io/sanitizer-api/#dom-element-sethtmlunsafe",
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "preview"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": false
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "setPointerCapture": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/setPointerCapture",
          "spec_url": "https://w3c.github.io/pointerevents/#dom-element-setpointercapture",
          "tags": [
            "web-features:pointer-events-api"
          ],
          "support": {
            "chrome": {
              "version_added": "55"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "59",
              "notes": "Before Firefox 82, `setPointerCapture()` throws `InvalidPointerId` for an invalid `pointerId` argument. From Firefox 82, it throws [the specified](https://w3c.github.io/pointerevents/#setting-pointer-capture) `NotFoundError` exception. See [bug 1662124](https://bugzil.la/1662124)."
            },
            "firefox_android": {
              "version_added": "79",
              "notes": "Before Firefox 82, `setPointerCapture()` throws `InvalidPointerId` for an invalid `pointerId` argument. From Firefox 82, it throws [the specified](https://w3c.github.io/pointerevents/#setting-pointer-capture) `NotFoundError` exception. See [bug 1662124](https://bugzil.la/1662124)."
            },
            "ie": [
              {
                "version_added": "11"
              },
              {
                "prefix": "ms",
                "version_added": "10"
              }
            ],
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "13"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "shadowRoot": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/shadowRoot",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-shadowroot①",
          "tags": [
            "web-features:shadow-dom"
          ],
          "support": {
            "chrome": {
              "version_added": "35"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "slot": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/slot",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-slot①",
          "tags": [
            "web-features:slot"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "tagName": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/tagName",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-tagname①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "toggleAttribute": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/toggleAttribute",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-toggleattribute①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": {
              "version_added": "69"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "18"
            },
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "touchcancel_event": {
        "__compat": {
          "description": "`touchcancel` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/touchcancel_event",
          "spec_url": [
            "https://w3c.github.io/touch-events/#event-touchcancel",
            "https://w3c.github.io/touch-events/#dom-globaleventhandlers-ontouchcancel"
          ],
          "tags": [
            "web-features:touch-events"
          ],
          "support": {
            "chrome": {
              "version_added": "22"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "52"
            },
            "firefox_android": {
              "version_added": "6"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": false
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": "≤3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "touchend_event": {
        "__compat": {
          "description": "`touchend` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/touchend_event",
          "spec_url": [
            "https://w3c.github.io/touch-events/#event-touchend",
            "https://w3c.github.io/touch-events/#dom-globaleventhandlers-ontouchend"
          ],
          "tags": [
            "web-features:touch-events"
          ],
          "support": {
            "chrome": {
              "version_added": "22"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "52"
            },
            "firefox_android": {
              "version_added": "6"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": false
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": "≤3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "touchmove_event": {
        "__compat": {
          "description": "`touchmove` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/touchmove_event",
          "spec_url": [
            "https://w3c.github.io/touch-events/#event-touchmove",
            "https://w3c.github.io/touch-events/#dom-globaleventhandlers-ontouchmove"
          ],
          "tags": [
            "web-features:touch-events"
          ],
          "support": {
            "chrome": {
              "version_added": "22"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "52"
            },
            "firefox_android": {
              "version_added": "6"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": false
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": "≤3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "touchstart_event": {
        "__compat": {
          "description": "`touchstart` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/touchstart_event",
          "spec_url": [
            "https://w3c.github.io/touch-events/#event-touchstart",
            "https://w3c.github.io/touch-events/#dom-globaleventhandlers-ontouchstart"
          ],
          "tags": [
            "web-features:touch-events"
          ],
          "support": {
            "chrome": {
              "version_added": "22"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "52"
            },
            "firefox_android": {
              "version_added": "6"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": false
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": "≤3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "transitioncancel_event": {
        "__compat": {
          "description": "`transitioncancel` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/transitioncancel_event",
          "spec_url": [
            "https://drafts.csswg.org/css-transitions/#transitioncancel",
            "https://drafts.csswg.org/css-transitions/#dom-globaleventhandlers-ontransitioncancel"
          ],
          "tags": [
            "web-features:transitions"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "87"
              },
              {
                "version_added": "74",
                "version_removed": "87",
                "partial_implementation": true,
                "notes": "The `ontransitioncancel` event handler property is not supported. To listen to this event, use `element.addEventListener('transitioncancel', function() {});`."
              }
            ],
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "53"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": [
              {
                "version_added": "13.1"
              },
              {
                "version_added": "12",
                "version_removed": "13.1",
                "partial_implementation": true,
                "notes": "Although the `ontransitioncancel` event handler property is supported, the `transitioncancel` event is never fired."
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "transitionend_event": {
        "__compat": {
          "description": "`transitionend` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/transitionend_event",
          "spec_url": "https://drafts.csswg.org/css-transitions/#transitionend",
          "tags": [
            "web-features:transitions"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "26"
              },
              {
                "prefix": "webkit",
                "version_added": "1"
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "18"
              },
              {
                "prefix": "webkit",
                "version_added": "79"
              },
              {
                "version_added": "12",
                "version_removed": "18",
                "partial_implementation": true,
                "notes": "The `ontransitionend` event handler property is not supported. To listen to this event, use `element.addEventListener('transitionend', function() {});`."
              }
            ],
            "firefox": {
              "version_added": "51"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "partial_implementation": true,
              "notes": "The `ontransitionend` event handler property is not supported. To listen to this event, use `element.addEventListener('transitionend', function() {});`."
            },
            "oculus": "mirror",
            "opera": [
              {
                "version_added": "12.1"
              },
              {
                "prefix": "webkit",
                "version_added": "15"
              },
              {
                "prefix": "o",
                "version_added": "11.6",
                "version_removed": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "12.1"
              },
              {
                "prefix": "webkit",
                "version_added": "14"
              },
              {
                "prefix": "o",
                "version_added": "12",
                "version_removed": "14"
              }
            ],
            "safari": [
              {
                "version_added": "7"
              },
              {
                "prefix": "webkit",
                "version_added": "4"
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "transitionrun_event": {
        "__compat": {
          "description": "`transitionrun` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/transitionrun_event",
          "spec_url": "https://drafts.csswg.org/css-transitions/#transitionrun",
          "tags": [
            "web-features:transitions"
          ],
          "support": {
            "chrome": {
              "version_added": "74"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "53"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "partial_implementation": true,
              "notes": "The `ontransitionrun` event handler property is not supported. To listen to this event, use `element.addEventListener('transitionrun', function() {});`."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": [
              {
                "version_added": "13.1"
              },
              {
                "version_added": "12",
                "version_removed": "13.1",
                "partial_implementation": true,
                "notes": "The event handler exists but will never be called."
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "transitionstart_event": {
        "__compat": {
          "description": "`transitionstart` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/transitionstart_event",
          "spec_url": "https://drafts.csswg.org/css-transitions/#transitionstart",
          "tags": [
            "web-features:transitions"
          ],
          "support": {
            "chrome": {
              "version_added": "74"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "53"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "partial_implementation": true,
              "notes": "The `ontransitionstart` event handler property is not supported. To listen to this event, use `element.addEventListener('transitionstart', function() {});`."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": [
              {
                "version_added": "13.1"
              },
              {
                "version_added": "12",
                "version_removed": "13.1",
                "partial_implementation": true,
                "notes": "The event handler exists but will never be called."
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "webkitmouseforcechanged_event": {
        "__compat": {
          "description": "`webkitmouseforcechanged` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/webkitmouseforcechanged_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "9"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "webkitmouseforcedown_event": {
        "__compat": {
          "description": "`webkitmouseforcedown` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/webkitmouseforcedown_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "9"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "webkitmouseforceup_event": {
        "__compat": {
          "description": "`webkitmouseforceup` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/webkitmouseforceup_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "9"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "webkitmouseforcewillbegin_event": {
        "__compat": {
          "description": "`webkitmouseforcewillbegin` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/webkitmouseforcewillbegin_event",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "9"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "wheel_event": {
        "__compat": {
          "description": "`wheel` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/wheel_event",
          "spec_url": [
            "https://w3c.github.io/uievents/#event-type-wheel",
            "https://html.spec.whatwg.org/multipage/webappapis.html#handler-onwheel"
          ],
          "tags": [
            "web-features:wheel-events"
          ],
          "support": {
            "chrome": {
              "version_added": "31"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "17"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9",
              "notes": "The `onwheel` event handler property is not supported. To listen to this event, use `element.addEventListener('wheel', function() {});`. See [IE bug 782835](https://connect.microsoft.com/IE/feedback/details/782835/missing-onwheel-attribute-for-the-wheel-event-although-its-supported-via-addeventlistener)."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}