array iteration-foreach (v2)

Revision 2 of this benchmark created on

Preparation HTML

<script>
  var array = [];
  for (var $i = 0; $i < 1000000; ++$i) array.push($i);
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
foreach
for (var i in array) {
  if (array[i] === -1) break
}
ready
to array.length
for (var i = 0; i < array.length; i++) {
  if (array[i] === -1) break
}
ready
to cached length
var l = array.length;
for (var i = 0; i < l; i++) {
  if (array[i] === -1) break
}
ready
prefix increment
for (var i = 0, l = array.length; i < l; ++i) {
  if (array[i] === -1) break
}
ready

Revisions

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