jquery/speed/benchmark.js

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JavaScript
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2010-02-05 03:02:27 +00:00
// Runs a function many times without the function call overhead
function benchmark(fn, times){
fn = fn.toString();
var s = fn.indexOf('{')+1,
e = fn.lastIndexOf('}');
fn = fn.substring(s,e);
return new Function('i','var t=new Date;while(i--){'+fn+'};return new Date-t')(times);
}