for vs while

JavaScript performance comparison

Revision 104 of this test case created by curiousdannii

Preparation code

<script>
  var myArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20];
</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 loop
 
for (var i = 0, len = myArray.length; i < len; i++) {

}
 pending…
while loop
 
var i = 0, len = myArray.length;
while ( i < len) {
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