Recap Challenge

Part of the Object Oriented Programming section of Coddy's JavaScript journey — lesson 14 of 56.

Challenge

Create a VendingMachine class that represents a drink vending machine with the following:

Properties:

location (string): where the machine is located
drinks (number): how many drinks are left

Methods:

getStatus(): returns a string like "Cafe machine: 15 drinks left"

Try it yourself

import { VendingMachine } from './VendingMachine.js';

// Test - don't modify this part
const cafeMachine = new VendingMachine("Cafe", 20);
console.log(cafeMachine.getStatus()); // "Cafe machine: 20 drinks left"

All lessons in Object Oriented Programming

1Objects & The this Keyword

Quick Review: Objects Adding Methods to Objects Understanding the this Keyword Constructor Functions The new Keyword Recap Challenge

4Methods & Managing State

Methods that modify state Method chaining pattern

7 Inheritance & The extends Key

Inheritance The "is-a" Relationship The extends Keyword The super() Method Inheriting Properties&Methods Recap Challenge

10Polymorphism

What is Polymorphism?Overriding Inherited Methods Using super Recap Challenge

13Composition vs. Inheritance

The "has-a" vs. "is-a"The Limits of Deep Inheritance Building objects

2Organizing Code

What are Modules?Exporting with export Importing with import Default vs. Named Exports

5Encapsulation & Access

Encapsulation Public & Private Class Fields Private Methods Recap Challenge

8Organizing OOP Code

Organize Classes into Modules

11Project: A Shape Renderer

Setup: Shape Class & Export Circle Class Inheritance

Overriding & Area Method

Static Shape Counter

14Library Management System

Designing the Library Book Class with Composition

Book Author Validation

3Classes & Objects

What is a Class?Creating Instances Properties and MethodsRecap Challenge

6Project: A Simple Bank Account

BankAccount Class Deposits and Withdrawals

Balance as Private Field

9Static Methods & Properties

Class-Level vs. Instance-Level Static Properties Static Utility Methods Recap challenge

12Getters & Setters

The get and set Keywords Computed Properties Validation and Side Effects Recap Challenge

15 Final Challenges

Game Character Builder E-commerce Product System University Management System Smart Home Device System