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Run results for:
Object freeze vs normal obj access
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=618724" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36 Edg/141.0.0.0
Browser:
Chrome 141
Operating system:
Windows
Device Platform:
Desktop
Date tested:
7 months ago
Test name
Executions per second
Freeze
340917.9 Ops/sec
No freeze
1382700.0 Ops/sec
Script Preparation code:
const baseObj = { ...[ Array.from({ length: 1000 }, () => Math.random().toString(16).slice(2)) ] } var obj = Object.assign({}, baseObj); var frozen = Object.freeze(Object.assign({}, baseObj));
Tests:
Freeze
for (let i = 0; i < 1000; i++) { frozen[i] }
No freeze
for (let i = 0; i < 1000; i++) { obj[i] }