| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <script> | |
| window.onload = () => { | |
| let s = window.getSelection() | |
| let r = document.createRange() | |
| r.selectNode(document.getElementById('b')) | |
| s.addRange(r) | |
| r = document.createRange() | |
| r.selectNode(document.getElementById('a')) | |
| s.addRange(r) | |
| document.documentElement.innerHTML = '' | |
| } | |
| </script> | |
| <body id='a' contenteditable='true'> | |
| <canvas tabindex='0'> | |
| <audio id='b'> |