Javascript array concat vs push

JavaScript performance comparison

Revision 43 of this test case created by bluefireuoop

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr1 = [new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), ];
  var arr2 = [new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), new Image(), ];
  var arr3;

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
concat
arr3 = arr1.concat(arr2);
pending…
push apply
Array.prototype.push.apply(arr1, arr2);
pending…
push
for (var i = 0, l = arr2.length; i++)
  arr1.push(arr2[i]);
pending…

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Revisions

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