Run results for: treeWalker param vs treefalker with filter function vs querySelectorAll edit

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36

Browser: Chrome 86

Operating system: Windows 7

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
treeWalker with param	408549.1 Ops/sec
treeWalker with filter function	7487.1 Ops/sec
querySelectorAll	920430.9 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 with param
const treeWalker = document.createTreeWalker( document.body, NodeFilter.SHOW_ELEMENT ); const list = []; while (treeWalker.nextNode()) { list.push(treeWalker.currentNode); }
treeWalker with filter function
const treeWalker = document.createTreeWalker( document.body, NodeFilter.SHOW_ALL, { acceptNode(node) { if (node.nodeType === Node.ELEMENT_NODE | Node.TEXT_NODE) { return NodeFilter.FILTER_ACCEPT; } return NodeFilter.FILTER_REJECT; } } ); const list = []; while (treeWalker.nextNode()) { list.push(treeWalker.currentNode); }
querySelectorAll
const list = document.body.querySelectorAll('*');

Run results for: treeWalker param vs treefalker with filter function vs querySelectorAll edit

treeWalker with param

treeWalker with filter function

querySelectorAll