Run results for: Traverse function vs NodeIterator vs TreeWalker

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:136.0) Gecko/20100101 Firefox/136.0

Browser: Firefox 136

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

NodeIterator with filter param

1.4M/s

TreeWalker with filter param

1.1M/s

Traverse function

728K/s

TreeWalker with filter function

227K/s

NodeIterator with filter function

93K/s

View exact numbers

Test name	Executions per second
✓ NodeIterator with filter param	1,363,758 Ops/sec
TreeWalker with filter param	1,091,372 Ops/sec
Traverse function	728,286 Ops/sec
TreeWalker with filter function	227,496 Ops/sec
NodeIterator with filter function	93,351 Ops/sec

Script Preparation code:

// language=HTML
const html = `
    <!-- 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 -->
`;
const template = document.createElement('template');
template.innerHTML = html;

window.testTemplate = template;

window.testTraverse = function traverse(node, use) {
    if (!node) return;

    use(node);
    traverse(node.firstChild, use);
    traverse(node.nextSibling, use);
}

Tests: