Run results for: jQuery by id vs Document.getElementById

Run details:

User agent: Mozilla/5.0 (Android 5.0.2; Mobile; rv:61.0) Gecko/61.0 Firefox/61.0

Browser: Firefox Mobile 61

Operating system: Android 5.0.2

Device Platform: Mobile

Date tested: 6 years ago

Test name	Executions per second
jQuery 3.1.1 Slim	43962.7 Ops/sec
Vanilla JS	511696.8 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');