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Run results for:
Crypto.randomUUID() vs new Date().getTime()
In real world example new Date() will be unique date. In this case its same days
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<iframe src="https://measurethat.net/Embed?id=603645" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.5 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
date.getTime()
2089126.2 Ops/sec
crypto.randomUUID()
38103.4 Ops/sec
Script Preparation code:
var dates = Array.from({length: 200}, () => new Date())
Tests:
date.getTime()
dates.map(date => date.getTime())
crypto.randomUUID()
dates.map(() => crypto.randomUUID())