A simple function that generates an alpha/numeric key

generateKey

const generateKey = (len=5, options) => {
    let generated_key = '';
    let config = {
        keyCharacters: 'aAbBcCdDeEgFhGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ0123456789',
        ...options
    };

    if (typeof len === 'object') {
        for (let i = 0; i < len.length; i++) {
            generated_key += generateKey(len[i]);

            if (i !== len.length-1)
                generated_key+='-';
        }
    } else if (typeof len === 'number') {
        let value = '';

        for (let i = 0; i < len; i++) {
            value += config.keyCharacters[Math.floor(Math.random() * config.keyCharacters.length)];
        }

        return value;
    }

    return generated_key;
}

// generateKey(24) // generates a 24 character Key ( NhxZiwpu7BKgClX1r8ciGLD2 )
// generateKey([8,4,4,8]) // generates an 8x4x4x8 Key ( tVUa64SG-oRmc-EqnG-2Z6e4mTO )
// generateKey(6,{keyCharacters:'0123456789ABCDEF'}) // Generates a HEX color ( 542A74 )