Run results for: querySelector vs getElementsByName vs getElementById vs getElementsByClassName - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Android 13; Mobile; rv:121.0) Gecko/121.0 Firefox/121.0

Browser: Firefox Mobile 121

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
querySelector	3600856.2 Ops/sec
getElementsByName	6954057.5 Ops/sec
getElementById	6808872.0 Ops/sec
getElementsByClassName	6856764.5 Ops/sec

HTML Preparation code:

<div name='test' id='test' class='test'></div>

Tests:

querySelector
document.querySelector('#test')
getElementsByName
document.getElementsByName('div[name="#test"]')
getElementById
document.getElementById('test')
getElementsByClassName
document.getElementsByClassName(".test")