Run results for: children vs queryselector

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser: Chrome 141

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 7 months ago

Test name	Executions per second
children	1668104.1 Ops/sec
queryselector	1907298.5 Ops/sec

HTML Preparation code:

<div><custom-element></custom-element></div>

Tests:

children
const divs = document.querySelectorAll("div") Array.from(divs).map(div => { div.children[0] })
queryselector
const divs = document.querySelectorAll("div") Array.from(divs).map(div => { div.querySelector('custom-element') })