Run results for: jQuery hasClass vs vanilla JS classList.contains

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0

Browser: Firefox 79

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
jQuery hasClass	1117163.1 Ops/sec
Vanilla JS classList.contains	2176266.0 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:

jQuery hasClass
$("#el").hasClass("test");
Vanilla JS classList.contains
document.getElementById("el").classList.contains("test");