Run results for: jQuery old vs Vanilla JS GetID Speed Test

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Browser: Chrome 79

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
getElementById()	3965513.0 Ops/sec
getElementsByClassName()	3015661.0 Ops/sec
getElementsByTagName()	2963055.0 Ops/sec
querySelector(#id)	2185864.0 Ops/sec
querySelector(.id)	2918715.0 Ops/sec
querySelectorAll(#id)	955129.3 Ops/sec
querySelectorAll(.id)	1228196.0 Ops/sec
jQuery(#id)	992373.8 Ops/sec
jQuery(.id)	597203.3 Ops/sec
jQuery(tag#id)	432423.0 Ops/sec
jQuery(tag.id)	477408.8 Ops/sec
jQuery + getElementById	1412368.0 Ops/sec
jQuery + getElementsByClassName	389599.6 Ops/sec
jQuery + querySelectorAll	382290.7 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="foo" class="foo2"></div>

Tests:

getElementById()
var el = document.getElementById('foo'); var className = el.className;
getElementsByClassName()
var el = document.getElementsByClassName('foo2')[0]; var className = el.className;
getElementsByTagName()
var el = document.getElementsByTagName('div')[0]; var className = el.className;
querySelector(#id)
var el = document.querySelector('#foo'); var className = el.className;
querySelector(.id)
var el = document.querySelector('.foo2'); var className = el.className;
querySelectorAll(#id)
var el = document.querySelectorAll('#foo')[0]; var className = el.className;
querySelectorAll(.id)
var el = document.querySelectorAll('.foo2')[0]; var className = el.className;
jQuery(#id)
var el = $('#foo')[0]; var className = el.className;
jQuery(.id)
var el = $('.foo2')[0]; var className = el.className;
jQuery(tag#id)
var el = $('div#foo')[0]; var className = el.className;
jQuery(tag.id)
var el = $('div.foo2')[0]; var className = el.className;
jQuery + getElementById
var el = $(document.getElementById('foo'))[0]; var className = el.className;
jQuery + getElementsByClassName
var el = $(document.getElementsByClassName('foo2'))[0]; var className = el.className;
jQuery + querySelectorAll
var el = $(document.querySelectorAll('.foo2'))[0]; var className = el.className;