Run results for: random id gen

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser: Chrome 104

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
nanoid	3.8 Ops/sec
generatecode	2.4 Ops/sec

Script Preparation code:

function nanoid(t = 21) {
    crypto.getRandomValues(new Uint8Array(t)).reduce(((t, e) => t += (e &= 63) < 36 ? e.toString(36) : e < 62 ? (e - 26).toString(36).toUpperCase() : e < 63 ? "_" : "-"), "");
}

function generateCode(length, containUppercase, groups = 0) {
    let result = '';
    let characters = containUppercase ? 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789' : 'abcdefghijklmnopqrstuvwxyz';
    let charactersLength = characters.length;

    for (let i = 0; i < length; i++) {
        result += characters.charAt(Math.floor(Math.random() * charactersLength));
    }

    if (groups) result = result.split('').map((l, i, a) => (i + 1) % groups == 0 && i != a.length - 1 ? l + '-' : l).join('')

    return result;
}

Tests:

nanoid
for (let i = 0; i < 100000; i++) { nanoid(); }
generatecode
for (let i = 0; i < 100000; i++) { generateCode(21, true); }

Run results for: random id gen

nanoid

generatecode