JS: For loop vs Array.indexOf (v115)

Revision 115 of this benchmark created on

Description

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

Preparation HTML

<script>
var ar = [];
for (var i=0; i<10000; i++) {
  ar.push(Math.random()+5*Math.random());
  if (i==4999) {
     ar.push(5);
  }
}
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
For loop
for (var i = 0; i < ar.length; i++) {
 if (ar[i] === 5) {
  break;
 }
}
ready
other for-loop
for (var i = 0, n = ar.length; i < n; i++) {
 if (ar[i] === 5) {
  break;
 }
}
ready
indexOf
var a = ar.indexOf(5);
ready

Revisions

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