array.length in loop (v8)

Revision 8 of this benchmark created on

Preparation HTML

<script>
  var arr = (function() {
   var i = 0,
       ret = [];
   while (i++ < 10000) {
    ret.push(i);
   }
   return ret;
  })();
</script>

Test runner

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Testing in
TestOps/sec
length in loop
var j;
for (var i = 0; i < arr.length; i++) {
 j = arr[i];
}
ready
length as variable
var j, len = arr.length;
for (var i = 0; i < len; i++) {
 j = arr[i];
}
ready
length2 as variable
var j;
for (var i = 0, len = arr.length; i < len; i++) {
 j = arr[i];
}
ready

Revisions

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