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Run results for:
1 css var - style.setProperty vs style.cssText vs style vs Object.assign vs setAttribute
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=502960" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Mobile Safari/537.36
Browser:
Chrome Mobile 118
Operating system:
Android
Device Platform:
Mobile
Date tested:
2 years ago
Object.assign
109/s
setAttribute
89/s
style.cssText
22/s
style.setProperty
20/s
style
18/s
View exact numbers
Test name
Executions per second
✓
Object.assign
109 Ops/sec
setAttribute
89 Ops/sec
style.cssText
22 Ops/sec
style.setProperty
20 Ops/sec
style
18 Ops/sec
HTML Preparation code:
<div id="test"><div style="height: calc(var(--w, 1) * 1px); background-color:red;"></div></div>
Script Preparation code:
el = document.getElementById("test"); rn = ()=>Math.floor(10+Math.random(5));
Tests:
style.setProperty
let i = 0; while (i < 10000) { el.style.setProperty("--w", rn); i++; }
style.cssText
let i = 0; while (i < 10000) { el.style.cssText = `--w: ${rn()};`; i++; }
style
let i = 0; while (i < 10000) { el.style = `--w: ${rn()};`; i++; }
Object.assign
let i = 0; while (i < 10000) { Object.assign(el.style, { ['--w']: rn(), }); i++; }
setAttribute
let i = 0; while (i < 10000) { el.setAttribute('style',`--w: ${rn()};`); i++; }