JavaScript is one of the most popular languages used by programmers all around the world. In this course, you'll be introduced to the Object-Oriented Paradigm of JavaScript. The course will discuss OOP in both, ES5 and ES6 versions of JavaScript. It begins with a basic introduction to what Object-Oriented programming is, followed by its comparison to other languages. It then introduces the new  OOP features available in ES6 version and compares it to the ES5 version. The course then discusses objects in JavaScript followed by the use of function as objects in OOP. It goes over the interesting concepts of prototype objects, data encapsulation, and classes. It then delves into the more complex concepts of inheritance in both the versions, including prototypal inheritance, prototype chaining, method overriding and mixins. The course is filled with interesting illustrations to help in your understanding of the concepts as well as numerous quizzes and exercises to help you practice.

Learn Object-Oriented Programming in JavaScript

An object's set of properties include data values and functions?

An object’s set of properties include data values and functions?

Use an object constructor to make an object.

Create an object based on an existing object.

What does the <code>create()</code> method do?

```
const human = {name : 'Adam', age : 28}
```
In the above code the value of `name` and `age` cannot be upadated. Is the statement true or false?

<pre><code>const human = {name : 'Adam', age : 28}
</code></pre>
In the above code the value of <code>name</code> and <code>age</code> cannot be upadated. Is the statement true or false?

Round brackets instead of square brackets should be used when accessing the `name` property.

`name` should be written as a string while accessing i.e., it should be `human['name']`  

Dot notation should be used instead of usig square brackets.

What is the error in the following code:

```var human = {
			name : 'Penny',
      age : 32
}
console.log(human[name])
```


What is the error in the following code:
<pre><code class="language-var">			name : 'Penny',
 age : 32
}
console.log(human[name])
</code></pre>

A function can be called using the square brackets in the following way:

```var human = {
			name : 'Penny',
      age : 32,
      display() {
      console.log("Name is penny and age is 32")
      }
}
human['display']()
```

A function can be called using the square brackets in the following way:
<pre><code class="language-var">			name : 'Penny',
 age : 32,
 display() {
 console.log(&quot;Name is penny and age is 32&quot;)
 }
}
human['display']()
</code></pre>

Properties, including both data values and functions, can be deleted or removed from an object using the `delete` operator. 

Properties, including both data values and functions, can be deleted or removed from an object using the <code>delete</code> operator.

What should be the return statement in the `display` function?
```var human = {
			name : 'Penny',
      display() {
      //function returns the name of the human
      }
}
```

What should be the return statement in the <code>display</code> function?
<pre><code class="language-var">			name : 'Penny',
 display() {
 //function returns the name of the human
 }
}
</code></pre>

`get` and `set` keywords allow the function to be accessed as a propety.

<code>get</code> and <code>set</code> keywords allow the function to be accessed as a propety.

A short quiz to test your understanding of objects in OOP in JavaScript.

Introduction

Objects in JavaScript

Functions as Objects

Classes

Inheritance

Quiz