Run results for: getElementById vs getElementsByClassName aasa

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0

Browser: Firefox 120

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

getElementById

254K/s

getElementsByClassName

243K/s

querySelector

235K/s

View exact numbers

HTML Preparation code:

<div id="a" class="a">d</div>

Tests:

getElementById
let el = document.getElementById('a'); el.innerHTML = 'abc';
getElementsByClassName
let el = document.getElementsByClassName('a')[0]; el.innerHTML = 'abc';
querySelector
let el = document.querySelector('.a'); el.innerHTML = 'abc';