Run results for: jQuery vs getElementById vs querySelector

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; Mi Note 3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.116 Mobile Safari/537.36 EdgA/46.01.4.5140

Browser: Chrome Mobile 77

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
jQuery	518558.0 Ops/sec
getElementById	1621612.8 Ops/sec
querySelector	523408.0 Ops/sec

HTML Preparation code:

<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.0.min.js"></script>
<div id="testElement" class="test class list classes"></div>

Tests:

jQuery
var el = $("#testElement")[0];
getElementById
var el = document.getElementById('testElement');
querySelector
var el = document.querySelector("#testElement");

Run results for: jQuery vs getElementById vs querySelector

Comparing speed of getting element by id with jQuery vs Vanilla JS with getElementById and querySelector

jQuery

getElementById

querySelector