Javascript global error handling

Question

I would like to catch every undefined function error thrown. Is there a global error handling facility in Javascript? The use case is catching function calls from flash that are not defined.

Answer 1

Does this help you:

<script type="text/javascript">
window.onerror = function() {
    alert("Error caught");
};

xxx();
</script>

I'm not sure how it handles Flash errors though...

Update: it doesn't work in Opera, but I'm hacking Dragonfly right now to see what it gets. Suggestion about hacking Dragonfly came from this question:

http://stackoverflow.com/questions/645840/mimic-window-onerror-in-opera-using-javascript