JS: For loop vs Array.indexOf (v90)

Revision 90 of this benchmark created on

Description

Testing speed of a standard for loop vs. Array.indexOf.

Preparation HTML

<script>
  T = function(i) {
    this.i = i;
  };

  var ar = [];
  for (var i = 0; i < 1000; i++)
  ar[i] = new T(i);
  w = ar[990]
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
For loop
for (var i = 0; i < ar.length; i++) {
  if (ar[i] === w) {
    break;
  }
}
ready
other for-loop
for (var i = 0, n = ar.length; i < n; i++) {
  if (ar[i] === w) {
    break;
  }
}
ready
indexOf
var a = ar.indexOf(w);
ready

Revisions

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