for vs while loop

JavaScript performance comparison

Revision 14 of this test case created

Preparation code

<script>
  var foo = [1, 2, 3, 4, 5];
</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
for
var l = foo.length;
for (var i = 0; i < l; i++) {

}
pending…
while
var i = foo.length;
while (i--) {

}
pending…
for backwards
var l = foo.length;
for (var i = l; i--;) {

}
pending…
do while
var i = foo.length;
do {

} while (--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