Question

46

Calling JS functions on browser tab close

rated 0 times [ 50] [ 4] / answers: 1 / hits: 24046 / 11 Years ago, wed, july 31, 2013, 12:00:00

enter

I need to call a Javascript function when user closing the browser tab. The problem is I want to happen this only when user closing the browser. No need to happen for page refresh, link navigation,form submit and back button press. I have tried the below JQuery code so far.

$(window).bind(

 "beforeunload", 

 function() { 

   alert("don't close me");

   return false;

 }

)

 $('form').submit(function() {

   jQuery(window).unbind("beforeunload");

 });

It's not working. Is there any other Javascript tools than JQuery available for this?

And if I call my function "beforeunload" event, above message is coming. I don't want to show this message and my function has to be worked. I tried by giving e.preventDefault. But it's not calling my function again. Can anybody suggest something.

Thanks.

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daytonm

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2 Years ago

answered 11 Years ago bryonk · Accepted Answer

I agree with the comments that this is a bad practice, but I can't resist the call to attempt answering the question.

The only way I can think of to accomplish this is to use onbeforeunload, which you're already doing. But you need a way of disabling that alert when someone navigates away from the page by some other means.

var show_close_alert = true;



$(a).bind(mouseup, function() {

    show_close_alert = false;

});



$(form).bind(submit, function() {

    show_close_alert = false;

});



$(window).bind(beforeunload, function() {

    if (show_close_alert) {

        return Killing me won't bring her back...;

    }

});

It's not foolproof, as in there are ways to close the browser without seeing the alert (like clicking a link, hitting Stop immediately, and then closing the browser), but it may be as close as you can get.

Here's a fiddle.

But please... don't do this.