Run results for: children vs queryselector

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:143.0) Gecko/20100101 Firefox/143.0

Browser: Firefox 143

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 11 months ago

Benchmark engine: Benchmark.js

children

2.0M/s

queryselector

1.7M/s

View exact numbers

Test name	Executions per second
✓ children	1,965,557 Ops/sec
queryselector	1,662,708 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') })