Run results for: jQuery by id vs Document.getElementById

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0

Browser: Firefox 55

Operating system: Windows 7

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
jQuery 3.1.1 Slim	336083.7 Ops/sec
Vanilla JS	2402133.5 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>

AخA
 
<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");
var el = $(".test");
Vanilla JS
var el = document.getElementsByClassName('test');
var el = document.getElementsByClassName('test');