Firefox “window.event is undefined” error

Question

I have this script:

function postBackByObject(e) {
   var o = window.event.srcElement || e.target;
   if (o.tagName == \"INPUT\" && o.type == \"check         


        

Answer 1

That's because it is. window.event is for older versions of IE.

The typical way to do this is:

function postBackByObject(e) {
    e = e || window.event;
    var o = e.srcElement || e.target;
    // ...
}