I expected !!"false" to return false i.e. !"false" would return true, so !!"false" would return "false", but when I tested it in the console, !!"false" returned true.
Why didn`t things happen as expected?
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Possible duplicate of [How can I convert a string to boolean in JavaScript?](http://stackoverflow.com/q/263965/125382). Voted to close. – MAK Mar 18 '11 at 04:42
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"false" is a non-empty string, which evaluates to true. Hence !"false" is false and !!"false" is true. You were probably thinking of !!false.
deceze
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The reason this is occurring because anything other than an empty string will return true.
Mike Lewis
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