contains() vs indexOf

JavaScript performance comparison

Revision 4 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  'use strict';
  
  if (!String.prototype.contains) {
    String.prototype.contains = function(searchString, offset) {
      return this.indexOf(searchString, offset) !== -1;
    };
  }
  
  var string = 'foobarfoobar';

};
</script>

Test runner

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

Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
indexOf
string.indexOf('rf') != -1;
pending…
contains
string.contains('rf');
pending…
~string.indexOf
~string.indexOf('rf');
pending…
!==
string.indexOf('rf') !== -1;
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.

0 Comments