Question

I’m having an issue with callbacks and it’s probably something I’m doing. Using a JS class, I have an array of callbacks that I push functions into like:

obj.addCallback(function() { .. });

That works fine. I try calling the function via:

var fns = this._callbacks;

if (fns != null) {
    for (var i = 0, len = fns.length; i < len; i++) {
        fns[i].apply(that, null);
    }
}

It gets to the apply of the function, but it never gets called. This works in IE 9 and FF, but not IE 7/8. How can I get it to work for all?

This is within an ASP.NET AJAX component.

Thanks.

Answer 1

Try changing

fns[i].apply(that, null);

To

fns[i].apply(that, []);