Run results for: jQuery addClass vs classList.add

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.80 Safari/537.36 OPR/72.0.3815.148

Browser: Opera 72

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
jQuery addClass	495407.1 Ops/sec
Javascript classList.add	1103934.0 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");

Tests:

jQuery addClass
$("#el").addClass("test");
Javascript classList.add
document.getElementById("el").classList.add("test");

Run results for: jQuery addClass vs classList.add

jQuery addClass

Javascript classList.add