Run results for: Math.random vs crypto.getRandomValues (2)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/131.0.6778.154 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 131

Operating system: iOS 18.1.1

Device Platform: Mobile

Date tested: one year ago

Math.random

438.1M/s

crypto.getRandomValues

8.8M/s

crypto.randomUUID

8.4M/s

View exact numbers

Test name	Executions per second
✓ Math.random	438,090,496 Ops/sec
crypto.getRandomValues	8,826,115 Ops/sec
crypto.randomUUID	8,371,249 Ops/sec

Script Preparation code:

var array = new Uint32Array(1)

Tests:

Math.random
Math.random()
crypto.randomUUID
crypto.randomUUID()
crypto.getRandomValues
crypto.getRandomValues(array)