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Run results for:
TreeWalker vs querySelectorAll vs NodeIterator + filter HTMLElement
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:141.0) Gecko/20100101 Firefox/141.0
Browser:
Firefox 141
Operating system:
Linux
Device Platform:
Desktop
Date tested:
9 months ago
Test name
Executions per second
TreeWalker
458026.5 Ops/sec
querySelectorAll
318693.9 Ops/sec
NodeIterator
387651.2 Ops/sec
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 treeWalker = document.createTreeWalker( document.body, NodeFilter.SHOW_ELEMENT, ); const list = []; let element; while (element = treeWalker.nextNode()) { list.push(element); } const elements = list.filter(el => el instanceof HTMLElement);
querySelectorAll
const elements = Array.from(document.body.querySelectorAll('*')).filter(node => node instanceof HTMLElement);
NodeIterator
const nodeIterator = document.createNodeIterator( document.body, NodeFilter.SHOW_ELEMENT, ); const list = []; let element; while (element = nodeIterator.nextNode()) { list.push(element); } const elements = list.filter(el => el instanceof HTMLElement);