javascript - Calling JS functions on browser tab close -


enter image description herei need call js function when user closing browser tab. problem want happen when user closing browser. no need happen page refresh, link navigation,form submit , button press. tried below jquery code far.

$(window).bind(  "beforeunload",   function() {     alert("don't close me");    return false;  } )  $('form').submit(function() {    jquery(window).unbind("beforeunload");  });

its not working. can answer this. there other js tools jquery available this?.

and if call function "beforeunload" event, above message coming. don't want show message , function has worked. tried giving e.preventdefault. it's not calling function when used that. can suggest something. thanks.

i agree comments bad practice, can't resist call attempt answering question.

the way can think of accomplish use onbeforeunload, you're doing. need way of disabling alert when navigates away page 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 back...";     } });

it's not foolproof, in there ways close browser without seeing alert (like clicking link, hitting stop immediately, , closing browser), may close can get.

here's fiddle.

but please... don't this.


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