| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <title>This will be in an iframe</title> | |
| <script> | |
| window.name = "iframe"; | |
| </script> | |
| <body onbeforeunload="return { toString: parent.postMessage.bind(parent, 'PASS', '*') };"> | |
| <!-- window.open() uses the entry settings object to determine how the URL will be parsed --> | |
| <button onclick="var w = window.open('open-window.html'); w.onload = () => { parent.onWindowLoaded(w.document.URL); };">This will be clicked</button> |