After onbeforeunload event

Question

I am tracking the window close/navigation event thru following code.

window.onbeforeunload = winClose;
    function winClose() {
        if (isDataChanged) {       
            return "Are you sure you want to close?";
        }
    }

This obviously will popup a confirmation with OK / Cancel. when the browser is closed.

Here i want to call an event after OK / Cancel is pressed. How to do that?

Answer 1

Try:

window.onbeforeunload = winClose;
    function winClose() {
        if (isDataChanged) {
            setTimeout(function() { do_canceled_event();  }, 500);
            return "Are you sure you want to close?";
        }
    }

using setTimeout, you take it out of the normal flow and js on the page is halted while the dialog is open. do_canceled_event() should run once processing continues. Hope that helps.

(note: not tested)