Gain insights into writing cleaner, modular, scalable JavaScript code through OOP. Explore basics to advanced concepts like prototypal inheritance, method overriding, and ES6 features.

Learn to write cleaner, more modular, and more scalable code in JavaScript by gaining mastery of Object Oriented Programming (OOP). 

You'll start with the basics of object-oriented programming and build up to more advanced concepts such as prototypal inheritance, prototype chaining, method overriding and mixins. Along the way, you'll learn how each concept applies to JavaScript's sometimes unique way of handling things. You'll also see how various JavaScript features make it particularly convenient for OOP, with particular emphasis on changes introduced in ES6.

This course is filled with hands-on coding challenges, playgrounds, snippets, and illustrations to keep things interactive.

Learn Object-Oriented Programming in JavaScript

# Problem Statement

In this exercise, you are required to write a function `totalBill` that *returns* the total bill after the customer buys that product.

>**Note:** Assume all prices are in *dollars*.

The *object* is already given below. However, the property values are not set. You can set them to whatever you want. The skeleton of the function is already given; you just need to write its implementation.



## Sample Input

* `name`: **Cheese**

* `price`: **20**
* `amount`: **10**
* `madeIn`: **USA**

## Sample Output

`totalBill` returns **200 dollars**.

>**Note:** The solution to this exercise is available in the code widget below. However, it'll be good practice to solve this problem yourself first. Good luck!



In this exercise, you will be required to add the function totalBill as a property to an object and implement it.

Introduction

Objects in JavaScript

Functions as Objects

OOP in JS - Exam 1

Classes

Inheritance

OOP in JS - Exam 2

Exercise 3: How much is the Bill?

Problem Statement