caching length

JavaScript performance comparison

Revision 30 of this test case created by

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

      
<script>
Benchmark.prototype.setup = function() {
  var arr = [];
  for (var i = 0; i < 1000; i++) {
    arr[i] =  "aaabbbbbccccbbbbcbcbXXXXXX" + Math.random();
  }

};
</script>

Preparation code output

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
indexOf
for (var i = 0, len = arr.length; i < len; ++i) {
  if(arr[i].toString().indexOf("bbcc") !== -1){
    return arr[i];
  }
}
pending…
search
for (var i = 0, len = arr.length; i < len; ++i) {
  if(arr[i].toString().search("bbcc") !== -1){
    return arr[i];
  }
}
pending…

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