Run results for: Random ASCII alphanumeric string

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.4.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Char	2967241.0 Ops/sec
Code	2662045.0 Ops/sec

Script Preparation code:

function randAlphanumCode() {
    const n = Math.trunc(Math.random() * 1e3) % 62;
    return n < 10
        ? n.toString()
        : String.fromCodePoint(n + ( n < 36 ? 55 : 61 ));
}

function randAlphanumChar() {
    const n = Math.trunc(Math.random() * 1e3) % 62;
    return n < 10
        ? n.toString()
        : String.fromCharCode(n + ( n < 36 ? 55 : 61 ));
}

Tests:

Char
randAlphanumChar()
Code
randAlphanumCode()

Run results for: Random ASCII alphanumeric string

Test performance difference between fromCodePoint vs fromCharCode when generating a random string consisting of only ASCII numbers/letters.

Char

Code