What is the !! operator in JavaScript?

Posted by Hexagon Theory on Stack Overflow See other posts from Stack Overflow or by Hexagon Theory
Published on 2009-04-24T08:13:58Z Indexed on 2010/04/07 2:23 UTC
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JavaScript

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operators

I've seen code that seems to use an operator I don't recognize, in the form of two exclamation points, like so: !!. Can someone please tell me what this operator does?

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