Run results for: jQuery addClass vs classList.add both wrapping element

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0

Browser: Firefox 63

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
jQuery addClass	1486713.0 Ops/sec
Javascript classList.add	2279655.0 Ops/sec

HTML Preparation code:

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

Script Preparation code:

document.getElementById("el").classList.remove("test");
el = $("#el")[0];
$el = $("#el");

Tests: