Out Of What Box?

JavaScript Array Performance: Initialize to Optimize

November 17 2009 by Dan Breslau in JavaScript, Web |1 Comment

The JavaScript interpreters in the most popular browsers distinguish between sparse and dense arrays. Hence, you may get more “array-like” performance if you initialize an array before using it. But this trades memory for speed, so it may not always be the best choice.

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JavaScript Array Performance: Initialize to Optimize

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