Javascript array concat vs push

JavaScript performance comparison

Revision 133 of this test case created by Kris

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr1 = []
  var arr2 = []
  var arr3 = []
  
  for (let i = 0; i < 20; i++) {
    arr1.push(i);
    arr2.push(i);
  }

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
push
for (i = 10000; i > 0; i--) {
  Array.prototype.push.apply(arr3, arr1);
  Array.prototype.push.apply(arr3, arr2);
}
pending…
concat
for (i = 10000; i > 0; i--) {
  arr1 = arr1.concat(arr2);
}
pending…

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Revisions

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