Do the main Javascript interpreters have any built in optimisation at all? I'm thinking of very simple cases like
while(i < array.length) { ... }
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fearofawhackplanet
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1I don't understand what your code sample has to do with optimization... – Ignacio Vazquez-Abrams May 12 '11 at 14:04
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I'm asking if a Javascript interpreter will optimise it for me – fearofawhackplanet May 12 '11 at 14:21
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I removed the "general" part of the question since people are voting to close for some strange reason. – fearofawhackplanet May 12 '11 at 14:24
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your code can be optimize, if that's what you're asking.
var ln = array.length; // save length into local variable to reduce scope
while(ln--) { ... } // only one value is evaluated in while statement
Headshota
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He's asking for optimizations performed by the implementation, not by the programmer. – May 12 '11 at 16:49