Run results for: children vs querySelectorAll scope

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

children

35K/s

querySelectorAll scope

30K/s

View exact numbers

Test name	Executions per second
✓ children	34,703 Ops/sec
querySelectorAll scope	29,703 Ops/sec

HTML Preparation code:

<div class="container">
  <ul>
    <li class="item">Item 1</li>
    <li class="item">Item 2</li>
    <li>Item 3</li>
  </ul>
</div>

Tests:

children
const container = document.querySelector('.container > ul'); const items = container.children; console.log(container, items);
querySelectorAll scope
const container = document.querySelector('.container > ul'); const items = container.querySelectorAll(':scope > *'); console.log(container, items);