Run results for: getElementsByTagName vs querySelectorAll

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36

Browser: Chrome 144

Operating system: Windows

Device Platform: Desktop

Date tested: 7 months ago

Benchmark engine: Benchmark.js

getElementsByTagName

20.4M/s

QueryselectorAll

3.5M/s

View exact numbers

Test name	Executions per second
✓ getElementsByTagName	20,391,402 Ops/sec
QueryselectorAll	3,499,075 Ops/sec

HTML Preparation code:

<ul id="list">
  <li>Item 1</li>
  <li>Item 2</li>
  <li>Item 3</li>
  <li>Item 4</li>
</ul>

Script Preparation code:

const list = document.getElementById('list')

Tests: