Benchmark: TreeWalker vs querySelectorAll vs NodeIterator filters

HTML Preparation code:

<!-- article out start -->
<article>
  <!-- article in start -->
  <h1>Lorem ipsum</h1>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cumque, nostrum.</p>
  <!-- article in end -->
</article>
<!-- article out end -->

<!-- article out start -->
<article>
  <!-- article in start -->
  <h1>Lorem ipsum</h1>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cumque, nostrum.</p>
  <!-- article in end -->
</article>
<!-- article out end -->

<!-- article out start -->
<article>
  <!-- article in start -->
  <h1>Lorem ipsum</h1>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cumque, nostrum.</p>
  <!-- article in end -->
</article>
<!-- article out end -->

Tests:

TreeWalker
const walker = document.createTreeWalker( document.body, NodeFilter.SHOW_ELEMENT, ); for (let node = walker.nextNode(), i = 0; node; i++, node= walker.nextNode() ) { if(node.nodeName == 'H1') node.className = 'classy' ; }
querySelectorAll
const elements = Array.from(document.body.querySelectorAll('h1')) for(let i = 0, len = elements.length; i < len; i++){elements[i].className = 'classy'}
NodeIterator
const walker = document.createNodeIterator( document.body, NodeFilter.SHOW_ELEMENT, ); for (let node = walker.nextNode(), i = 0; node; i++, node= walker.nextNode() ) { node.className = 'classy' ; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
TreeWalker
querySelectorAll
NodeIterator

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.6806.72 Safari/537.36

Browser/OS: Chrome 133 on Windows 7

View result in a separate tab

querySelectorAll

185K/s

TreeWalker

158K/s

NodeIterator

98K/s

View exact numbers

Test name	Executions per second
✓ querySelectorAll	184,996 Ops/sec
TreeWalker	158,172 Ops/sec
NodeIterator	97,586 Ops/sec

TreeWalker vs querySelectorAll vs NodeIterator filters (version: 0)

Comparing performance of: `TreeWalker vs querySelectorAll vs NodeIterator`

Created: 4 years ago by: Guest

Go to the latest result

TreeWalker

querySelectorAll

NodeIterator

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

TreeWalker vs querySelectorAll vs NodeIterator filters (version: 0)

Comparing performance of: TreeWalker vs querySelectorAll vs NodeIterator

Created: 4 years ago by: Guest

Go to the latest result

TreeWalker

querySelectorAll

NodeIterator

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `TreeWalker vs querySelectorAll vs NodeIterator`