show alert on close of browser tab and browser close

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i don't want to close my page on browser tab close and whole browser close
any idea ???
i used below code but its working only in IE(internet explorer) and also it prevent page to close on back button which should not be done

if (window.event) {
if (window.event.clientX < 40 && window.event.clientY < 0) {}
}

Posted 22-Apr-15 1:31am

Umesh Parshad

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Richard Deeming 22-Apr-15 8:09am

So you want to make a page that the user cannot close, even if they close the browser?

That sounds suspiciously like malicious code to me.

Umesh Parshad 22-Apr-15 8:38am

no actually i want it at very first click....
on 2nd clikc browser/tab should be closed

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Praveen Kumar Upadhyay · Answer 1 · 2015-04-22T01:58:00

Solution 1

Window unload event can help you.

JavaScript

$(window).unload(function(){
//put your code here which you want to check 
});

Posted 22-Apr-15 1:58am

Praveen Kumar Upadhyay