Run results for: children vs new querySelctorAll

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Linux

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
...children	134208.6 Ops/sec
querySelectorAll	158109.1 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 itemList = [...container.children].filter(el => el.matches('li.item')); console.log(container, itemList);
querySelectorAll
const container = document.querySelector('.container > ul'); const itemList = document.querySelector('.container > ul > li.item'); console.log(container, itemList);