for-vs-length (v4)

Revision 4 of this benchmark created on

Preparation HTML

<script>
  var array = new Array();
  for (var i = 0; i < 1000; i++) {
    array.push(i);
  }
  var tarray = new Int32Array(1000);
  for (var j = 0; j < 1000; j++) {
    tarray[j] = j;
  }
</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
TypedArray Optimized Loop
var dummy = 0;
for (var i = 0, al = tarray.length; i < al; i++) {
  dummy += tarray[i];
}
ready

Revisions

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