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Run results for:
querySelector vs getElementByTagName arrays
Comparing performance of querySelector and getElementByTagName to array
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<iframe src="https://measurethat.net/Embed?id=625233" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:147.0) Gecko/20100101 Firefox/147.0
Browser:
Firefox 147
Operating system:
Linux
Device Platform:
Desktop
Date tested:
5 months ago
querySelector
2.2M/s
getElementByTagName
1.3M/s
View exact numbers
Test name
Executions per second
✓
querySelector
2,181,708 Ops/sec
getElementByTagName
1,267,676 Ops/sec
HTML Preparation code:
<div><span></span></div>
Tests:
getElementByTagName
Array.from(document.getElementsByTagName('span'))
querySelector
document.querySelector('span')