Run results for: Class vs Id Jquery

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36

Browser: Chrome 80

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Javascript getelementbyid	3175177.5 Ops/sec
javascript get by class	3766764.0 Ops/sec
jquery get by id	1392338.8 Ops/sec
jquery get by class	654054.5 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>

<div id='elementIdentifier' class='classIdentifier'></div>


<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>

Tests:

Javascript getelementbyid
document.getElementById('elementIdentifier');
javascript get by class
document.getElementsByClassName('classIdentifier');
jquery get by id
$('#elementIdentifier')
jquery get by class
$('.classIdentifier')

Run results for: Class vs Id Jquery

Javascript getelementbyid

javascript get by class

jquery get by id

jquery get by class