forEach vs loop

JavaScript performance comparison

Revision 22 of this test case created by S.

Preparation code

<script src="http://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.4.4/underscore-min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/angular.js/1.1.5/angular.min.js"></script>
<script src="http://sugarjs.com/current/sugar-full.min.js"></script>
<script>
Benchmark.prototype.setup = function() {
    var arr = [];
    for(var i = 0; i < 100000; i++) arr[i]=i;
    var equal = function(v) {v;};
   
};
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
forEach
arr.forEach(equal);
pending…
loop
for(var i = 0, l = arr.length; i < l; i++){equal(arr[i]);}
pending…
underscore each
_.each(arr, equal);
pending…
angular forEach
angular.forEach(arr, equal);
pending…
sugarjs forEach
arr.each(equal);
pending…

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