Javascript - Confirmation when leaving page

Question

I\'m trying to implement a basic popup window that asks the user if they really want to leave a page, similar to what would happen on this site if I tried to close the windo

Answer 1

At the head:

...

In the two links allowed to leave, you can add

onclick="disabledConfirm_exit=true;"

And inside the confirm_exit

function confirm_exit(e) {
    if(disabledConfirm_exit) return;
    if(!e) e = window.event;

    e.cancelBubble = true;
    e.returnValue = 'Are you sure you want to leave?'; 

    if (e.stopPropagation) {
        e.stopPropagation();
        e.preventDefault();
    }
}