This Javascript module design patternsis used for keeping particular pieces of code independent of other components

design_pattern_javascript_module.js

// Module Design Pattern
var Car = (function() {
    var manufacturer = "hyundai";
    var wheels = 4;
    var price = 149000;
    var isAdmin = false;
    var loginAdmin = function(u, p) {
        if (u === 'admin' && p === '123') {
            isAdmin = true;
            console.log('Welcome admin');
        } else {
            console.error('Acces denied');
        }
    };

    var logoutAdmin = function() {
        isAdmin = false;
    };

    var privateInfo = function() {
        if (isAdmin) {
            console.log("Price " + price.toLocaleString());
        } else {
            console.error('You are not logged');
        }
    }

    var publicInfo = function() {
        return "Manufacturer " + manufacturer + " wheels " + wheels;
    };

    return {
        publicInfo: publicInfo,
        loginAdmin: loginAdmin,
        logoutAdmin: logoutAdmin,
        privateInfo: privateInfo
    };
})();