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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36 OPR/71.0.3770.284

Browser: Opera 71

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
jQuery hasClass	873629.7 Ops/sec
Vanilla JS classList.contains	1922843.4 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");