warning before browser close in c# using javascript/jquery

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hi,

I'm in a situation to write a script only in my page.aspx.cs
i'm including below lines in my code

C#

$( window ).on('unload',function() {
  alert( 'Bye now!' );
});

its throwing an alert after closing my browser. so, i'm using

C#

$( window ).on('beforeunload',function() {
  return 'Are you SURE!' ;
});

which is not working
could any one help me, i want a warning before closing my browser and it should be shown only when red cross button at top right is pressed not when page is refreshed or redirected to another page.
Help me Please.

Posted 29-Oct-13 3:03am

sumanth n

Updated 29-Oct-13 3:12am

v3

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sumanth n 29-Oct-13 9:43am

TrushnaK, CodeBlack
thanks,

i'm writing my script under aspx.cs

so its throwing an error when i use double quotes,

im writing my script as

string str_Script = @"
<script type='text/javascript'>
</script>"

could you help me!!!

2 solutions

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TrushnaK · Answer 1 · 2013-10-29T03:20:00

Solution 1

try this javascript function:-

XML

<script type="text/javascript">
    var close = true;
    window.onbeforeunload = function(){
    if (close) {
        return "Hope you like it."
    }
    }
    function unhook() {
    close=false;
    }
</script>

Posted 29-Oct-13 3:20am

TrushnaK

CodeBlack · Answer 2 · 2013-10-29T03:27:00

Try with below code :

JavaScript

window.onbeforeunload = function () {
           var r = confirm("Are you sure ?");

           if (r) {
               alert('You pressed "OK"');
           } else {
               alert('You pressed "Cancel"');
           }

           return r;
       };