while vs forr

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var a = [1,2,3,4,5,6,7,8];
};
</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
while
var i = -1, n = a.length;
while (++i < n) {
  a[i];
};
pending…
for i++
for (var i = 0, n = a.length; i < n; i++) {
  a[i];
};
pending…
for ++i
for (var i = -1, n = a.length; i < n; ++i) {
  a[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