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Run results for:
Declarative shadow dom
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=487242" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/112.0
Browser:
Firefox 112
Operating system:
Linux
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
AttachShadow
169K/s
DOMParser code
9K/s
View exact numbers
Test name
Executions per second
✓
AttachShadow
169,468 Ops/sec
DOMParser code
9,152 Ops/sec
HTML Preparation code:
<div id="container"></div>
Tests:
DOMParser code
const prerendered = ` <div> <template shadowroot="open"> <p> Dynamically loaded shadow dom </p> <p> Dynamically loaded shadow dom </p> </template> </div> `; const elem = new DOMParser().parseFromString(prerendered, 'text/html', { includeShadowRoots: true}); document.getElementById('container').appendChild(...elem.body.children)
AttachShadow
const container = document.getElementById('container'); const elem = document.createElement('div'); const shadow = elem.attachShadow({mode: 'open'}); shadow.textContent = ` <p> Dynamically loaded shadow dom </p> <p> Dynamically loaded shadow dom </p> `; container.appendChild(elem);