JS: For loop vs Array.indexOf (v205)

Revision 205 of this benchmark created by Christopher Woodall 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
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
+1 for-loop
var i = 0,
    len = ar.length;
for( i = 0; i < len; i++ ) {
 if( ar[i] === 5 ) {
  break;
 }
}
ready

Revisions

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