caching length

JavaScript performance comparison

Revision 30 of this test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
 
<script>
Benchmark.prototype.setup = function() {
    var arr = [];
    for (var i = 0; i < 1000; i++) {
      arr[i] =  "aaabbbbbccccbbbbcbcbXXXXXX" + Math.random();
    }
};
</script>

Preparation code output

Test runner

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

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
indexOf
for (var i = 0, len = arr.length; i < len; ++i) {
  if(arr[i].toString().indexOf("bbcc") !== -1){
    return arr[i];
  }
}
pending…
search
for (var i = 0, len = arr.length; i < len; ++i) {
  if(arr[i].toString().search("bbcc") !== -1){
    return arr[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