| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script> | |
| document.addEventListener("DOMContentLoaded", () => { | |
| document.designMode = "on"; | |
| let win; | |
| try { | |
| win = top.open("data:text/html,This is new window"); | |
| } catch (e) { | |
| } | |
| document.designMode = "off"; | |
| document.documentElement.innerHTML = document.documentElement.innerHTML; | |
| win?.close(); | |
| focus(); | |
| }, {once: true}); | |
| </script> | |
| </head> | |
| <body> | |
| <small contenteditable></small> | |
| </body> | |
| </html> |