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
A *constructor* function called `Calculator` is given with fields: `num1` and `num2`. You have to add the following methods to the *constructor* function:

* `add()`: a method which returns the sum after the addition of `num1` and `num2`.

* `subtract()`: a method which returns the subtraction of `num1` from `num2`

* `multiply()`: a method which returns the multiplication of `num1` and `num2`.

* `divide()`: a method which returns the division of `num2` by `num1`.


## Sample Input
```
var obj = new Calculator(5,10)
obj.add()
obj.subtract()
obj.multiply()
obj.divide()
```
## Sample Output
```
15
5
50
2
```


In this exercise, you have to implement a calculator which can perform addition, subtraction, multiplication, and division.



Introduction

Objects in JavaScript

Functions as Objects

OOP in JS - Exam 1

Classes

Inheritance

OOP in JS - Exam 2

Exercise 2: Calculator

Problem Statement