| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <style> | |
| div { | |
| border: medium solid red; | |
| border-width: 32em; | |
| } | |
| </style> | |
| <script> | |
| document.addEventListener("DOMContentLoaded", () => { | |
| document.execCommand("selectAll"); | |
| getSelection().modify("move", "backward", "character"); | |
| getSelection().collapseToStart(); | |
| }, {once: true}); | |
| </script> | |
| </head> | |
| <body> | |
| <button contenteditable></button> | |
| <input value="a"> | |
| <div></div> | |
| </body> | |
| </html> |