this === window in firebug

Posted by Yousui on Stack Overflow See other posts from Stack Overflow or by Yousui
Published on 2010-03-09T02:20:14Z Indexed on 2010/03/09 2:21 UTC
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Hi guys,

I wrote a simple webpage as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<script type="text/javascript" charset="utf-8">
document.write(this === window);

I browse this page using IE6 and FireFox 3.5.8, both give an answer true. But when I press F12 in FireFox and type this===window in the console, it will give me an answer false, why?

Great thanks.

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