onBeforeUnload handler says null in IE

Question

my web-app has this:

$(window).bind(\'beforeunload\', function() {
    if(unSavedChanges == true)
    {
        return \'You have unsaved changes\';
    }
           


        

Answer 1

I use normal javascript for this and works fine

function setConfirmUnload(on) {
     window.onbeforeunload = (on) ? unloadMessage : null;
}

function unloadMessage() {
     return 'Please stay on the page';
}