Performance of Array vs. Object

JavaScript performance comparison

Revision 31 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr = [],offset = 89,len = 100,
      i, obj = {};
  for (i = 0; i < len ; i += 1) {
    var o = {
      i: i
    };
    arr.push(o);
    obj[i] = i;
  }

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Array Performance
var sum = 0;
for (var x = 0; x < arr.length; ++x) {
  if (x == offset ) {
    console.log(arr[x]);
    break;
  }
}
pending…
Object Performance
console.log(obj[offset])
pending…
Object Performance using known length
var sum = 0;
for (var x = 0; x < len ; ++x) {
  if (x == offset ) {
    console.log(arr[x]);
    break;
  }
}
pending…

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