Run results for: getElementById vs querySelector

Run details:

User agent: Mozilla/5.0 (Linux; Android 13; SM-N770F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Mobile Safari/537.36 EdgA/114.0.1823.41

Browser: Chrome Mobile 114

Operating system: Android

Device Platform: Mobile

Date tested: 9 months ago

Test name	Executions per second
getElementById	869741.1 Ops/sec
querySelector	507231.9 Ops/sec

HTML Preparation code:

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

Tests:

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