JS: For loop vs Array.indexOf (v278)

Revision 278 of this benchmark created by Adrian Bartholomew on

Description

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

Preparation HTML

<script>
  var ar = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
For loop
var length = ar.length
for (var i = 0; i < length; i++) {
  if (ar[i] === 5) {
    break;
  }
}
ready
other for-loop
var length = ar.length
for (var i = 0, n = length; i < n; i++) {
  if (ar[i] === 5) {
    break;
  }
}
ready
indexOf
var a = ar.indexOf(5) !== -1;
ready
for loop assigned
for (var i = 0, needle; needle = ar[i]; i++) {
  if (needle === 5) {
    break;
  }
}
ready

Revisions

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