Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Run results for:
getElementById vs querySelector vs getElementsByClassName vs getElementsByName
Test performance of different ways of get just one particular DOM element
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=614292" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0
Browser:
Firefox 140
Operating system:
Linux
Device Platform:
Desktop
Date tested:
9 months ago
Test name
Executions per second
getElementById
12318271.0 Ops/sec
getElementsByTagName
7834391.0 Ops/sec
querySelector
7639315.5 Ops/sec
getElementsByClassName
6221550.0 Ops/sec
getElementsByName
10737837.0 Ops/sec
HTML Preparation code:
<div id="testdiv"> <div id="unique" class="unique" name="unique" data-unique="1">test</div> </div>
Script Preparation code:
var i, imax; var doc = document;
Tests:
getElementById
var test = doc.getElementById('testdiv').childNodes[0].innerHTML;
getElementsByTagName
var formelem = doc.getElementById('testdiv').getElementsByTagName('div')[0].innerHTML;
querySelector
var test = doc.getElementById('testdiv').querySelector('.unique').innerHTML;
getElementsByClassName
var test = doc.getElementById('testdiv').getElementsByClassName('unique')[0].innerHTML;
getElementsByName
var test = doc.getElementsByName('unique')[0].innerHTML;