array iteration

JavaScript performance comparison

Revision 92 of this test case created

Preparation code

<script>
  var i, values = [],
      sum = 0;
  for (i = 0; i < 10000; i++) {
    values[i] = i;
  }

  function add(val) {
    sum += val;
  }
</script>

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
forEach
values.forEach(add);
pending…
for in index
for (var i in values) {
  add(values[i]);
}
pending…
for ++i
for (var i = 0, len = values.length; i < len; ++i) {
  add(values[i]);
}
pending…
for i++
for (var i = 0, len = values.length; i < len; i++) {
  add(values[i]);
}
pending…
for ++i let
for (let i = 0, len = values.length; i < len; ++i) {
  add(values[i]);
}
pending…

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

0 comments

Add a comment