JS: For loop vs Array.indexOf (v262)

Revision 262 of this benchmark created on

Description

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

Preparation HTML

<script>
  var ar = [
    'asset!0',
    'asset!11',
    'asset!15',
    'asset!16',
    'asset!20',
    'asset!21',
    'asset!22',
    'asset!28',
    'asset!4',
    'asset!7'];
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
For loop
var i, n = ar.length, key = ar[Math.floor(Math.random()*10)];

for (i = 0; i < n; i++) {
 if (ar[i] === key) {
  break;
 }
}
ready
while
var n = ar.length, key = ar[Math.floor(Math.random()*10)];

while(n--) {
  if( ar[n] === key ) {
    break;
  }
}
ready
indexOf
var key = ar[Math.floor(Math.random()*10)];
var a = ar.indexOf(key);
ready

Revisions

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