Performance of Array vs. Object

JavaScript performance comparison

Revision 73 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var arr = [],
      i,
      obj = {};
  for(i = 0; i < 100; i += 1) {
      arr.push(i);
      obj[i] = i;
  }
  
  function getRandomIndex(obj) {
     var idx = Math.floor(Math.random()*9999);
     if(false === obj.hasOwnProperty(idx)) {
        while (false === obj.hasOwnProperty(idx)) {
            idx = Math.floor(Math.random()*9999);
        }
     }
     return idx;
  }

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Array Performance
var x;
for(i = 0; i < 100; i += 1) {
    x = arr.indexOf(i);
}
pending…
Object Performance
var x;
for(i = 0; i < 100; i += 1) {
    x = obj[i];
}
pending…

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Revisions

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