| <html> | |
| <head> | |
| <script> | |
| var doMutation = function() { | |
| var region = document.getElementById("to_mutate"); | |
| region.firstChild.textContent = "New text contents"; | |
| window.setTimeout(function() { window.close(); } ); | |
| } | |
| window.addEventListener("load", doMutation); | |
| </script> | |
| </head> | |
| <body> | |
| <div id="to_mutate" aria-live="polite" aria-relevant="text" aria-atomic="false"> | |
| Original contents. | |
| </div> | |
| </body> | |
| </html> |