Run results for: jQuery hasClass vs jQuery classList.contains

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0

Browser: Firefox 120

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

jQuery classList.contains

8.0M/s

jQuery hasClass

3.4M/s

View exact numbers

Test name	Executions per second
✓ jQuery classList.contains	7,968,216 Ops/sec
jQuery hasClass	3,367,636 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: