On Tue, 3 Oct 2006, Michael Geary wrote:

> No need to go to the extra work. jquery.js begins with this:
>
> window.undefined = window.undefined;
>
> So "undefined" exists in every browser. This is a handy line of code to put
> in any JavaScript - it's completely compatible with both old and new
> browsers.

Hah! JavaScript is SO WEIRD!

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