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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=572827" 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/131.0.0.0 Safari/537.36
Browser:
Chrome 131
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
date.getTime()
2591371.8 Ops/sec
crypto.randomUUID()
7208.0 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())