ArrayBuilding

JavaScript performance comparison

Test case created by Eric Dalquist

Info

push vs index

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var n = 100000;
    var a = [];
};
</script>

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Testing in unknown unknown
Test Ops/sec
push
for (var j = 0; j<n; j++) {
  a.push(j);
}
pending…
index
for (var j = 0; j<n; j++) {
  a[a.length] = j;
}
pending…

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