Javascript array concat vs push

JavaScript performance comparison

Revision 10 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr1 = []
  var arr2 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
concat
arr1 = [0, 9, 8, 7, 6, 5, 4, 3, 2, 1];
arr2 = [];
for (var i = 0; i < arr1.length; i++) {
  arr2 = arr2.concat(arr1);
}
pending…
push
arr1 = [0, 9, 8, 7, 6, 5, 4, 3, 2, 1];
arr2 = [];
for (var i = 0; i < arr1.length; i++) {
  for (var j = 0; j < arr1.length; j++) {
    arr2.push(arr1[j])
  }
}
pending…

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