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Canceling the onbeforeunload event

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nationavon

nationavon

MIS
Joined
Jun 19, 2001
Messages
86
Location
US
I have a window that spawns a child window that contains a java applet. When the user closes the child I need to be sure that the parent was closed first. I've tried the following:

<SCRIPT LANGUAGE=&quot;JavaScript1.2&quot; TYPE=&quot;text/javascript&quot;>
<!-- Hide
window.onbeforeunload = unloadFunc;

function unloadFunc()
{
if(self.opener.closed) {
mess = &quot;&quot;
return mess;
} else {
alert('You must close the other window first!');
window.onbeforeunload = null;
}
}
// unhide -->
</SCRIPT>

The only problem is that it gives the alert but the window closes anyway. I need a way of aborting the onbeforeunload event until the parent window has been closed.
 
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try the following:

in between your <head></head> tags write:

<script language=javascript>
function unloadFunc()
{
if(!self.opener.closed) {
event.returnValue = &quot;must close the other window first!&quot;;
}

}
</script>

....

<body ... onbeforeunload=&quot;unloadFunc()&quot;>
 
Upvote 0 Downvote
I think you may need to change
window.onbeforeunload = null; to
return false;
 
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