window.onbeforeunload and window.onunload is not working in Firefox, Safari, Opera?
dom-events, javascript, jquery
Solution
I got the solution for `onunload` in all browsers except Opera by changing the Ajax asynchronous request into synchronous request.
xmlhttp.open("POST","LogoutAction",false);
It works well for all browsers except Opera.
Problem
In my chat application I need to get confirmation from user, when my application closes. So I used the `window.onbeforeunload` for confirmation alert and `window.onunload` for `logout()`. But both functions are working in IE and Chrome. (Application works fine) `window.onbeforeunload` not working in Opera and my message will not get displayed in Firefox. `window.onunload` not working in Safari, Opera and Firefox. My JavaScript code will be: ``` // Used for confirmation, to closing the window window.onbeforeunload = function () { return "Are you sure want to LOGOUT the session ?"; }; // Used to logout the session, when browser window was closed window.onunload = function () { if((sessionId != null)&&(sessionId!="null")&& (sessionId != "")) logout(); }; ``` I also tried the same function with JQuery, ``` <script type="text/javascript"> $(window).on('beforeunload', function() { return 'Are you sure want to LOGOUT the session ?'; }); $(window).unload(function() { if ((sessionId != null) && (sessionId != "null") && (sessionId != "")) { logout(); } }); </script> ```