Run results for: getElementById vs querySelector vs getElementsByTagName pt. 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

getElementById

3.7M/s

querySelector tag name

2.6M/s

querySelector element ID

2.5M/s

getElementsByTagName

2.2M/s

View exact numbers

HTML Preparation code:

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

Tests:

getElementById
var el = document.getElementById('testElement'); var className = el.className;
querySelector element ID
var el = document.querySelector('#testElement'); var className = el.className;
querySelector tag name
var el = document.querySelector('div'); var className = el.className;
getElementsByTagName
var el = document.getElementsByTagName('div'); var className = el.className;