At least till bug 61098 not fixed alert(), conform(), prompt() in unload event handler should throw security error. This is a Security and Phishing issue. Also similar handling needed for print(), <input type=file>.click() and location = "http://anysite/newpage.html"; Reason:- * Goto http://www.raygoldmodels.com/ * press ctrl+W PS:credits to bug 410220 reporter
I don't think that's a good idea. onunload is very much used for "good" web applications use cases of asking if the user really want to exit the page.
Magnus, you're probably thinking of the browser's onbeforeunload dialog, which can include *some* text specified by the web site and gives users a chance to cancel leaving the page. Alerts during onunload are different: they can't let users cancel leaving the page, and I think they're abused more than they're used for "legitimate" purposes.
Status: NEW → RESOLVED
Closed: 12 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 391834
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