Create a simple ID with JavaScript.

create-id.js

/**
 * Create a simple ID with JavaScript.
 *
 * @author Tobias Röder
 * @version 1.0.0
 *
 * @param {Number} length
 *
 * @returns {String}
 */
function createId(length = 8) {
    const chars =
        'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    let id = '';

    for (let i = 0; i < length; i++) {
        id += chars[Math.floor(Math.random() * (chars.length - 1) + 0)];
    }

    return id;
}