push vs reassign

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var arr = [];
    var count = 200000;
};
</script>

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Testing in unknown unknown
Test Ops/sec
reassign
arr.length = count;
for (var i = 0; i < count; i++) {
  arr[i] = true;
}
pending…
push
for (var i = 0; i < count; i++) {
  arr.push(true)
}
pending…

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