Empty "for" loop in Facebook ajax

Posted by celticpride on Stack Overflow See other posts from Stack Overflow or by celticpride
Published on 2010-06-17T01:49:58Z Indexed on 2010/06/17 1:52 UTC
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Filed under:

JavaScript

|

AJAX

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facebook

While surfing facebook and using the Firebug network debugger I noticed that facebook's AJAX responses all start with an empty for loop.

Example:

for(;;);{...}

Does anyone know why this is done? I assume it's to prevent some sort of XSS attack but I don't totally understand. Thanks!

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