hasClass v className.indexOf

JavaScript performance comparison

Test case created by Doug Avery

Preparation code

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="testme" class="test_class">Test!</div>
<script>
  $testme = $('#testme');
</script>
    

Preparation code output

<div id="testme" class="test_class">Test!</div>

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
className (checks for complete classes)
(' ' + $testme[0].className + ' ').indexOf(' test_class ') > -1;
(' ' + $testme[0].className + ' ').indexOf(' fake_class ') > -1;
pending…
className
$testme[0].className.indexOf('test_class') > -1;
$testme[0].className.indexOf('fake_class') > -1;
pending…
hasClass
$testme.hasClass('test_class');
$testme.hasClass('fake_class');
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

Test!