Push individual vs Push all

JavaScript performance comparison

Revision 2 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var existingArray = [],
        num = 5000,
        i;
   
    for (i = 0; i < num; ++i) {
      existingArray[i] = i;
    }
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Push
var newArrayOne = [],
    i;

for (i = 0; i < existingArray.length; ++i) {
  newArrayOne.push(i);
}
pending…
Apply Push
var newArrayTwo = [];

Array.prototype.push.apply(newArrayTwo, existingArray);
pending…

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