Run results for: Crypto.randomUUID() vs new Date().getTime()

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

date.getTime()

2.0M/s

crypto.randomUUID()

39K/s

View exact numbers

Test name	Executions per second
✓ date.getTime()	2,033,984 Ops/sec
crypto.randomUUID()	38,633 Ops/sec

Script Preparation code:

var dates = Array.from({length: 200}, () => new Date())

Tests: