| <!doctype html> | |
| <title>Prompt when beforeunload has returnValue set</title> | |
| <script> | |
| addEventListener("beforeunload", | |
| function(e) {e.returnValue = "PASS if you see this"}, | |
| false); | |
| </script> | |
| <p>When clicking the link below, you should get a prompt asking if you want to unload the document</p> | |
| <a href="next.html">Click here</a> |