Run results for: getElementById vs querySelector

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/114.0

Browser: Firefox 114

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
getElementById	7115247.0 Ops/sec
querySelector	5850333.0 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;