| <!doctype html> | |
| <html> | |
| <head><title>Document</title></head> | |
| <body> | |
| <h1>Document</h1> | |
| <script> | |
| window.addEventListener("load", function() { | |
| window.addEventListener("visibilitychange", event => { | |
| opener.postMessage({ | |
| target: event.target.nodeName, | |
| state: document.visibilityState, | |
| bubbles: event.bubbles | |
| }, "*"); | |
| }); | |
| opener.postMessage("close", "*"); | |
| }); | |
| </script> | |
| </body> | |
| </html> |