| <script> |
| function queueTest() { |
| // The timeout is necessary to avoid the parser still being active when |
| // `document.open()` is called and becoming a no-op. |
| // |
| // We also cannot use setTimeout(..., 0), as the parser is terminated in a |
| // task with DOM manipulation task source while the timeout is run in a task |
| // on the timer task source. The order is therefore not guaranteed. Let's |
| // play it safer and use some actual timeout. |
| setTimeout(() => { |
| document.open(); |
| document.write("<p>New content</p>"); |
| document.close(); |
| opener.onDocumentOpen(); |
| }, 200); |
| } |
| </script> |
| <body onload="opener.onFrameLoaded(); queueTest();"> |
| <p>Old content</p> |
| </body> |
