for-vs-length (v5)

Revision 5 of this benchmark created on

Preparation HTML

<script>
  var array = new Array();
  for (var i = 0; i < 5000; i++) {
    array.push(i);
  }
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Normal Loop
var dummy = 0;
for (var i = 0; i < array.length; i++) {
  dummy += array[i];
}
ready
Optimized Loop
var dummy = 0;
for (var i = 0, al = array.length; i < al; i++) {
  dummy += array[i];
}
ready
While Loop
var dummy = 0,
aitems = array.length;
while (aitems--) {
  dummy += array[aitems];
}
ready

Revisions

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