Run results for: crypto vs random

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.7 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.7

Device Platform: Mobile

Date tested: 10 months ago

crypto

18K/s

random-string

2K/s

View exact numbers

Test name	Executions per second
✓ crypto	17,749 Ops/sec
random-string	1,879 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

function uuidv4() {
  let pattern = /[xy]/g;
  return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(pattern, (match, param, param$1) => {
    let r = Math.random() * 16.0 | 0;
    let v = match === "x" ? r : r & 3 | 8;
    return v.toString(16);
  });
}

var dates = Array.from({length: 200}, () => new Date())

Tests:

crypto
dates.map(() => crypto.randomUUID())
random-string
dates.map(() => uuidv4())