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Run results for:
getElementById vs querySelector vs getElementsByClassName v2
Test performance of different ways of get just one particular DOM element
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<iframe src="https://measurethat.net/Embed?id=599631" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36
Browser:
Chrome 134
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
getElementById
13324125.0 Ops/sec
querySelector
9885544.0 Ops/sec
getElementsByClassName
13463329.0 Ops/sec
HTML Preparation code:
<div id="unique" class="unique" name="unique" data-unique="1">test</div>
Script Preparation code:
var uniques = document.getElementsByClassName('unique');
Tests:
getElementById
var test = document.getElementById('unique').innerHTML;
querySelector
var test = document.querySelector('.unique').innerHTML;
getElementsByClassName
var test = uniques[0].innerHTML;