It seems that your browser is not supported by our application.

Creating an object literal

Objects in JavaScript

11 Lessons

Get started with JavaScript objects, their methods, properties, and practical exercises.

What are objects?

Accessing Object Properties

Setting & Deleting Properties

Methods in Objects

Get & Set

Exercise 2: Let's iterate!

Exercise 1: Let's Shop

Exercise 3: How much is the Bill?

Exercise 4: Discount? Wow

Functions as Objects

12 Lessons

Go hands-on with creating and managing objects using constructor functions and prototypes.

Objects or Constructor Functions?

Constructor Functions

Object Instances

Additions in Constructor Functions

Methods in Constructor Functions

Prototype Objects

Using Prototype Objects

Data Encapsulation in ES5

Exercise 1: Sum of Squares

Exercise 2: Calculator

Exercise 3: Calculate the Student's Total Marks

OOP in JS - Exam 1

Assessment

Classes

7 Lessons

Find out about creating, managing, and protecting classes and properties in ES6 JavaScript.

Implementing Classes

Class Methods

Protecting Properties

Static Methods

Exercise 1: Time to Go Shopping!

Exercise 2: Expired or Not?

Inheritance

11 Lessons

Dig into prototypal and class-based inheritance, overriding, mixins, and hands-on exercises.

Prototype Property

Prototypal Chaining

Prototypal Inheritance in Function Objects

Class-based Inheritance in ES5

Inheritance in ES6

Overriding Methods & Properties

Mixins

Exercise 1: Who's the Teacher?

Exercise 2: Finding the Type of Triangle

Exercise 3: Inheritance with Cars

OOP in JS - Exam 2

Assessment

Trusted by 2.5 million developers working at companies

"These are high-quality courses. Trust me. I own around 10 and the price is worth it for the content quality. EducativeInc came at the right time in my career. I'm understanding topics better than with any book or online video tutorial I've done. Truly made for developers. Thanks"

Anthony Walker

@_webarchitect_

"Just finished my first full #ML course: Machine learning for Software Engineers from Educative, Inc. ... Highly recommend!"

Evan Dunbar

ML Engineer

"You guys are the gold standard of crash-courses... Narrow enough that it doesn't need years of study or a full blown book to get the gist, but broad enough that an afternoon of Googling doesn't cut it."

Carlos Matias La Borde

Software Developer

"I spend my days and nights on Educative. It is indispensable. It is such a unique and reader-friendly site"

Souvik Kundu

Front-end Developer

"Your courses are simply awesome, the depth they go into and the breadth of coverage is so good that I don't have to refer to 10 different websites looking for interview topics and content."

Vinay Krishnaiah

Software Developer

"I've tried probably 5-7 different sites and Educative is easily the best. It perfectly blends explanation with interactivity"

Eric Downs

Musician/Entrepeneur

Hands-on Learning Powered by AI

See how Educative uses AI to make your learning more immersive than ever before.

Instant Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

AI-Powered Mock Interviews

Put your skills to the test in a simulated interview setting. Receive personalized feedback based on your performance. Available in Premium & Premium Plus plans.

Adaptive Learning

At various checkpoints throughout Educative courses, you will be prompted to take a quick assessment. Receive a condensed curriculum tailored to your strengths and skill gaps.

Explain with AI

Select any text within any Educative course, and get an instant explanation — without ever leaving your browser.

AI Code Mentor

AI Code Mentor helps you quickly identify errors in your code, learn from your mistakes, and nudge you in the right direction — just like a 1:1 tutor!

Recommended before starting this course

Course

Build Reactive Websites with RxJS: Master Observables and Wrangle

intermediate

50 hours 30 mins

Course

Creating a CRUD REST API with Deno & Oak

intermediate

2 hours

Course

Building Full-Stack Web Applications with AdonisJs

intermediate

Build Reactive Websites with RxJS: Master Observables and Wrangle

50 hour 30 min

Creating a CRUD REST API with Deno & Oak

2 hour

Building Full-Stack Web Applications with AdonisJs

Related Courses and Skill Paths

Course

Learn Object-Oriented Programming in C++

Delve into Object-Oriented Programming in C++ and discover key concepts like classes, objects, inheritance, and polymorphism to create efficient, reusable, and secure code through hands-on challenges.

intermediate

6 hours

Course

Learn Object-Oriented Programming in Python

Gain insights into writing cleaner, modular, and scalable Python code through Object-Oriented Programming. Delve into inheritance, polymorphism, and more with interactive coding challenges and illustrations.

intermediate

6 hours

Course

Learn Object-Oriented Programming in Java

Explore the fundamentals of OOP in Java. Gain insights into inheritance, polymorphism, and more to write clean, modular, reusable code through interactive exercises and practical challenges.

intermediate

6 hours

Course

Learn Object-Oriented Programming in C#

An introductory course on OOP in C#, covering concepts like classes, inheritence and polymorphism.

intermediate

9 hours

Learn Object-Oriented Programming in C++

6 hour