Run results for: jQuery by id vs Document.getElementById

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36 OPR/52.0.2871.64

Browser: Opera 52

Operating system: Mac OS X 10.13.4

Device Platform: Other

Date tested: 6 years ago

Test name	Executions per second
jQuery 3.1.1 Slim	883402.1 Ops/sec
Vanilla JS	4350697.5 Ops/sec

HTML Preparation code:

<script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.slim.min.js"></script>
<div class="test"></div>
<div class="test2"></div>

Tests:

jQuery 3.1.1 Slim
var el = $(".test");
Vanilla JS
var el = document.getElementsByClassName('test');

Run results for: jQuery by id vs Document.getElementById

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

jQuery 3.1.1 Slim

Vanilla JS