popup message on closing browser

Question

When I am closing my browser I want a confirmation message.

I am using

window.onbeforeunload = confirmExit;
function confirmExit() {
return "You will Lost this test. Are you sure you want to exit this page?";
}

But this function is also working on page postback on my page.

I want this message on window cclose only

What should I have to do.????

Khargesh Rajput · Answer

Solved use OnClientClick=needToConfirm = false; on controls on page and javascript fun is var needToConfirm = true; window.onbeforeunload = confirmExit; window.onload = confirmExit = false; function confirmExit() { if (needToConfirm) return You are Ending the test. Are you sure you want to exit this page?; }

Khargesh Rajput · Answer

Not working.

Joginder Banger · Answer

try this one $(window).unload(function() { var answer = confirm(Are you sure?) if (answer){ alert(Bye bye!) } else{ alert(Thanks for sticking around!) } });