map vs native for loop

JavaScript performance comparison

Revision 22 of this test case created by sadas as as sad


test the performance of the jquery map versus a native for loop map

Preparation code

<script src=""></script>
Benchmark.prototype.setup = function() {
    testArray = new Array(100);
    for (var i = 0; i < 100; i++) {
      testArray[i] = i;
    map = function(array, mapFunction) {
      var newArray = [];
      for (var i = 0; i < array.length; i++) {
      return newArray;
    double = function(x) {
      return x * 2;

Preparation code output

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Testing in unknown unknown
Test Ops/sec
jquery map
var result = $.map(testArray, double);
for loop map
var result = map(testArray, double);

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