BestEmptyArray

JavaScript performance comparison

Revision 2 of this test case created by Tomas Corral

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var aArray = [2, 4, 5, 6, 7, 8, 9, 10, 11];
};

Benchmark.prototype.teardown = function() {
    if (aArray.length !== 0) {
      throw new Error();
    }
};
</script>

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Testing in unknown unknown
Test Ops/sec
equal empty array
aArray = [];
pending…
length equals 0
aArray.length = 0;
pending…
splice
aArray.splice(0, aArray.length);
pending…
filter
aArray = aArray.filter(function(value) {
  return false
});
pending…

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