CODE EXAMPLE FOR JAVASCRIPT

random key generator

const random = (length = 8) => {
    // Declare all characters
    let chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';

    // Pick characers randomly
    let str = '';
    for (let i = 0; i < length; i++) {
        str += chars.charAt(Math.floor(Math.random() * chars.length));
    }

    return str;

};

console.log(random()); // JgKGQEUx
console.log(random(12)); // ttwbeshkYzaX
console.log(random(20)); // zZN7uH9pPjhJf30QNus5