Run results for: jQuery hasClass vs jQuery classList.contains

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:123.0) Gecko/20100101 Firefox/123.0

Browser: Firefox 123

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

jQuery classList.contains

9.9M/s

jQuery hasClass

4.1M/s

View exact numbers

Test name	Executions per second
✓ jQuery classList.contains	9,885,938 Ops/sec
jQuery hasClass	4,080,846 Ops/sec

HTML Preparation code:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div id="el" class="test"></div>

Tests: