caching length

JavaScript performance comparison

Revision 69 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var arr=[];
    for(var i=0;i<1000;i++) {
      arr[i]=Math.random();
    }
};
</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
cached
for(var i=0,len=arr.length;i<len;i++) {
  arr[i]*=2;
}
pending…
let in
"use strict";
for(let i in arr) {
  arr[i]*=2;
}
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

Comment form temporarily disabled.

Add a comment