Run results for: getElementById vs querySelector

Run details:

User agent: Mozilla/5.0 (Linux; Android 5.1.1; KFSUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/96.1.237 like Chrome/96.0.4664.128 Safari/537.36

Browser: Amazon Silk 96

Operating system: Android 5.1.1

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
getElementById	1068026.2 Ops/sec
querySelector	520361.2 Ops/sec

HTML Preparation code:

<div id="testElement"></div>

AخA
 
<div id="testElement"></div>

Tests:

getElementById
var el = document.getElementById('testElement'); var className = el.className;
var el = document.getElementById('testElement');
var className = el.className;
querySelector
var el = document.querySelector('#testElement'); var className = el.className;
var el = document.querySelector('#testElement');
var className = el.className;