Sunday, July 30, 2006

Javascript - NaN

NaN means "not a number".

You cannot perform == or != operations against NaN.
NaN is not a string. And it is not a number either (duh!)

You must use the function isNaN() to test for it.
on
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1 comment:

  1. AnonymousFebruary 11, 2009 at 12:16 AM

    at least in firefox 3 you can use

    something == NaN

    ReplyDelete

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