Benchmark: querySelectorAll vs getElementsByTagName 2z

HTML Preparation code:

<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>

Tests:

querySelectorAll
const allDivs = document.querySelectorAll('div');
getElementsByTagName
const allDivs = Array.from(document.getElementsByTagName('div'));

Rendered benchmark preparation results:

Previous results

Test case name	Result
querySelectorAll
getElementsByTagName

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0

Browser/OS: Firefox 78 on Windows

Test name	Executions per second
querySelectorAll	81333.3 Ops/sec
getElementsByTagName	55832.1 Ops/sec

querySelectorAll vs getElementsByTagName 2z (version: 0)