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detecting the javascript refresh event

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g8z

g8z

Programmer
Dec 18, 2001
12
US
How does one detect the browser refresh event?

I'm making a program that requires that the user not manully refresh the screen - if a manual refresh is done anyway, an error should appear.

Is there a different between clicking &quot;Refresh&quot; vs. typing in the same URL again to the Address Bar vs. using <meta redirect...> code to automatically refresh. And if there is a different, how would these differences be detected?
 
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can't your &quot;app&quot; do the job here ? (detecting conection outs)
is your page generated by some client side script ?
is it always the same url ?
u could play with the expiremeta tag maybe...
can u explain more about why u can allow reload() ? &quot;refresh&quot;
someone knowledge ends where
someone else knowledge starts
 
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I can detect a disconnection using unUnload() in the <body> tag, however, my app (a PHP/Javascript chat room) needs to be able to distinguish between refresh events, browser closures, form submissions, and even back/forward events. It would be most helpful to be able to precisely distinguish the actions using Javascript somehow.

E.g. If browser closes, then the &quot;logged in&quot; user list must update, but if the browser refreshes, then no update to the user list, but the area where the chat messages are displayed should update, etc.
 
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