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Run results for:
getElementById vs getElementsByClassName a
a
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=488486" width="100%" height="500px"></iframe>
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
Test name
Executions per second
getElementById
198597.6 Ops/sec
getElementsByClassName
232787.3 Ops/sec
querySelector
240567.0 Ops/sec
HTML Preparation code:
<div id="a" class="b"></div>
Tests:
getElementById
document.getElementById('a'); a.innerHTML="abc";
getElementsByClassName
let b = document.getElementsByClassName('b')[0]; b.innerHTML="def";
querySelector
let c =document.querySelector(".b"); c.innerHTML="ghi";