Posts Tagged nan

Definitive isNaN()

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I wrote an article in November 2009 titled Faster isNaN() and a followup to it titled Even Faster isNaN() and continue to get comments on both, so today I’m doing a followup to bring together both articles and the many comments on them into one definitive article. (UPDATE: added Windows performance results)

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Even Faster isNaN()

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I wrote an article last November showing how to make your isNaN() calls 12x faster. Today, thanks to a tip from the comments on that article, I’ll show you how to make your isNaN() calls even even faster! (UPDATE: see the definitive article on isNaN for much more!)

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Faster isNaN()

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You cannot directly check if a value is NaN by comparing with it. AS3, AS2, and JavaScript therefore provide a useful isNaN() function to do this very check. However, it is very slow. Today I’ll show you a workaround that results in a faster isNaN(): (UPDATE: see the definitive article on isNaN for much more!)

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