Question

I have used window.onbeforeunload on my javascript codes, but apparently it only works for FireFox:

    <script type="text/javascript">
    window.onbeforeunload = function (e) {
       location.href="admin.jsp?action=logout";
    };
    </script>

I need this to close at least 5 renowned browsers (firefox,IE,opera,safari,and chrome). Can anyone help me out?

Answer 1

Use a synchronous XHR to do this, and use the unload event instead of onbeforeunload:

window.addEventListener('unload', function() {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', 'admin.jsp?action=logout', false);
    xhr.send(null);
}, false);