Stop window.event with Javascript window.confirm?

Question

I am trying to have a confirm box come up when the viewer tries to close the window, that allows the user to stay on the current page (by click Cancel), or continue closing the window (by click OK).

My code is as follows...

<script>     
    function confirm_exit(){
        var message = window.confirm("My message.");
        if (message == true) {
            // Output when OK is clicked
            window.close();
        } else {
            // Output when CANCEL is clicked
            ???????
        }
    }
</script>

I am not sure because either one I click closes the window. I need Cancel to remain at the current page, and OK to close the window or proceed with the users window.event.

Hope this makes sense.

Answer 1

The day you can prevent me from closing my browser window with javascript is the day I ditch that browser as soon as possible for another one in which you can't. It's a security / user issue: it you can prevent closing with javascript, what's to stop you from not even having the politeness of asking to confirm? You should not have this possibility, and browser manufacturers will do everything they can to prevent you from having it.

Answer 2

Courtesy of a certain website with a dash in it's name:

window.onbeforeunload = leaveConfirm;
function leaveConfirm() {
    var leaveThePageMessage = 'Are you sure you want to leave this page?';
    return leaveThePageMessage;
}​

This should work in all browsers (except for Opera).

Answer 3

Try:

window.onbeforeunload = function()
{
  return confirm('Are you sure you want to close?');
}