Javascript array concat vs push

JavaScript performance comparison

Revision 330 of this test case created by Nahuel Santoalla

Preparation code


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

};
</script>

Test runner

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

Revisions

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