Online Learning10 Best JavaScript Courses to Learn Online in 2021 | All Levels...

10 Best JavaScript Courses to Learn Online in 2021 | All Levels Included

JavaScript (JS) is the programming language of the web. According to W3Techs, JavaScript is used in 97.1% of all websites. Its usage in web development is so prominent that we could say every website is using this language.

Therefore, if you want to do web development jobs, you must have strong JavaScript skills.

Fortunately, JavaScript is not a difficult programming language to learn (though I prefer Python.) Many web developers learn JavaScript from online courses and become experts at the end.

JavaScript is a popular programming language, so there will be many online courses and tutorials. However, you don’t have to worry about this because I have selected only useful, value for money, and practical JavaScript courses and tutorials for you.

You only have to carefully read which course suits you most and then buy the course to start learning.

Things You Should Know

There will be both JavaScript courses for beginners and advanced users in this post. Therefore, each of them will have different prerequisites.

Please read the details and evaluate yourself prudently, whether you are ready before buying any course.

This post contains affiliate links. This means I will receive a small commission from the learning platforms if you purchase any training courses through our links. I promise I will use this income to provide better content for everyone.

Course Types and Recommendations

I classify three JavaScript courses into three types:

  • Theoretical course – You will learn JavaScript concepts and syntax, and even how each expression or operator works. In practice, you will solve coding challenges along the way, but not a large, hands-on project.
  • Project-based course – You will learn by completing various projects or a single huge project. This could be real-world web applications such as a social network or an e-commerce site. The course will teach you how to apply JavaScript knowledge in the real world. You should expect to code intensively when you take this type of course.
  • Comprehensive – Your instructor creates the course by merging the best of both worlds.

I am a fan of comprehensive courses, and I believe this is your best option to learn JavaScript or any other programming languages.

Thus, most JavaScript courses that I recommend will be of this category. Still, you might want another project-based course to cement your skills.

If you did not want to take a comprehensive course, I suggest taking one theoretical and one project-based course.

The first course will teach all the basics of JavaScript you need to know, while the second course will put everything you learn into practice.

However, these recommendations are subjective. You can suit any course that suits your learning style.

I have taken some of the JavaScript courses mentioned in this post. There will be a “My Reviews” section instead of “My Thoughts.” In this section, I will explain what I think of the course.

Learning JavaScript tips

You will use the VS Code to code in almost every JavaScript training course. VS Code is a very fast editor used by many professional programmers, so you don’t need to invest much in hardware. A decent computer will suffice.

Coding JavaScript in VS Code
Coding JavaScript in VS Code

Though online courses will give you tons of information, you will rely on Stackoverflow and JavaScript documentation to solve your problems most of the time. Your instructor will provide more information on this in the course.

Best JavaScript Courses for Beginners

First, I will begin with JavaScript courses for beginners. If you are already familiar with the source-code editor, such as VS Code, that would be very helpful.

Some courses require you to have basic knowledge of HTML and CSS, while others don’t. Therefore, please choose the best one that suits your background.

Udemy frequently conducts sales campaigns. If you want to buy a Udemy course, you should buy it during that time, since most courses will be at a 90% discount.

1. The Complete JavaScript Course 2021: From Zero to Expert!

This is the most popular online JavaScript course on Udemy by a wide margin. Your instructor Jonas Schmedtmann is a full-stack web developer with a decade of experience in web development.

As a comprehensive course, you will learn the concepts, plus several opportunities to code by yourself. Any background knowledge is unnecessary, but Jonas notes that knowledge of HTML and CSS could be useful.

Complete JavaScipt Course 2021 by Jonas - one of the best online courses available
Complete JavaScript Course 2021 by Jonas

Course Content:

  • JavaScript Fundamentals (Variables, Data Types, Operators)
  • Functions, Objects and Arrays
  • Loops (For, while)
  • VS Code Set up (Very detailed)
  • HTML and CSS crash course
  • DOM Manipulation and Events
  • Internal processes of JavaScript (engines, call stack, hoisting, scoping, etc.)
  • Object-Oriented Programming in JavaScript (Classes, Inheritance, Encapsulation)
  • Asynchronous JavaScript: Promises, Async/Await, AJAX
  • Modules and Tooling
  • and many more

Along with the theoretical part, you will be given 5 projects to complete. They are games, modern websites, a map app, and a food recipe app. The last one will be the final project. You will use every knowledge of JavaScript you learn from the course.

Comments and Tips

Jonas’s course is unarguably one of the best JavaScript courses available online. The course is well-structured and beginner-friendly.

He explains each part of the course in-depth. Besides syntax, he also teaches people how to think like a web developer, write their code effectively, and numerous other real-world skills. These thought processes make great web developers.

Furthermore, Jonas provides learners with many resources. This includes practice exercises for every lesson, a detailed guide on the source-code editor (not many courses are providing this), and many hands-on examples.

This course also teaches modern JavaScript (ES6+) from the very beginning. Experienced developers will find this online course helpful as well.

Course Length: 66.5 Hours

Ratings: 4.7/5.0

Students: 394,000+

Access: Lifetime access

2. The Modern Javascript Bootcamp Course (2020)

This JavaScript course is taught by two of the highest-rated instructors on Udemy, Colt Steele and Stephen Grider. Both are experienced instructors who have taught programming to students for many years.

This course is comprehensive. Cole will teach JavaScript concepts in the first part, while Grider will lead you to build real-world applications in the second part.

Colt and Stephen's JavaScript Course  on Udemy
Colt and Stephen’s JavaScript Course

Course Content:

First Part (JavaScript basics and concepts)

  • JS Values, Variables, Strings
  • Logics, Conditionals, Arrays, Objects, Loops
  • Functions and Array Call Back Methods, Arrow Functions (ES6+)
  • DOM Manipulation and Events
  • Asynchronous Code, Callbacks, Promises
  • Making HTTP Requests (Introduce AJAX, JSON)
  • Object-Oriented Programming
  • and many more

Second Part: You will learn to build several projects. The major one is a full e-commerce application that you will create from scratch. You will go further than vanilla JS because you are going to create Node.js tools on your own.

Features you will learn to add in your e-commerce app:

  • Custom database
  • User Authentication
  • Image and file upload
  • A shopping cart
  • Custom testing framework for automated testing of your code.
  • Beautiful user interface

Throughout Part II, you will develop practical skills by building upon the knowledge you learn in the first part.

Stephen will teach you step-by-step, starting with basics. After you complete the e-commerce project, you will be ready to use JavaScript to build your own web applications.



  • Colt explains everything in great detail. He is very knowledgeable and gifted in simplifying (especially coding exercises). He will also give you useful tips and tricks for you to better understand JavaScript.
  • Stephen tries his best to help you apply your js skills, and he is successful. He will show you different “good and bad ways” that arrive with the same results.


  • Practice exercises in the first part are too few. There should be several coding exercises per lesson, not 1-2 out of 2-3 lessons.
  • Exercises are also too complicated for new programmers, as you have to use all of what you learn in 2-3 lessons to find the answer. Though Colt manages to explain the solution clearly, I still lose my confidence in programming.
  • Part II can be challenging, especially if you have no programming experience.

Tips: You can practice with Freecodecamp’s coding exercises after you finish each of Colt’s lessons. Based on my experience, this works well.

Furthermore, you may want to pause the videos several times to sort out the logic on your own before proceeding. Rushing to finish this course is not recommended.

Overall, this is probably one of the best online courses for beginners to learn JavaScript. After you finish Stephen’s section, you will be amazed by what you have created with your own hands!

Course Length: 52 Hours

Ratings: 4.7/5.0

Students: 32,800+

Access: Lifetime

3. The Modern JavaScript Bootcamp

This is a comprehensive JavaScript course on Udemy created by Andrew Mead, a full-stack developer and founder of the web development company.

In this course, you will learn JavaScript concepts from the very beginning. Andrew will also guide you in building 3 real-world applications from scratch to enhance your skills.

Andrew Mead's online JavaScript course on Udemy
Andrew Mead’s Modern JavaScript Bootcamp

Course Content:

  • Installation of VS Code and Node.js
  • Variables and Flow of Control
  • Functions, Objects and Arrays
  • DOM Manipulation
  • Data Storage and Libraries
  • Arrow Functions and JavaScript ES6+
  • Asynchronous JavaScript
  • Latest JavaScript features (You will learn Babel and Webpack usage)
  • and many more

You also build deployable JavaScript web apps: Note-app, a self-created app, and a hangman game. Furthermore, there will be 80 other practice exercises for you to strengthen your web development skills.

Comments and Tips

Andrew’s js course is much shorter than the rest (29.5 hours), especially on JavaScript’s core concepts. However, this does not mean this course is incomplete. Many reviewers note that his explanation is concise and clear in every learning section.

On the other hand, Andrew explains modern JavaScript features in great detail. He spent more than 6 hours on this, which is equivalent to a typical ES6+ Udemy course. This course is for you if you want to learn more about new JavaScript features such as Webpack.

Unlike Colt’s course, this course has numerous coding challenges for you to sharpen your programming skills. You don’t need to search elsewhere for it.

Finally, Andrew is very generous. You can learn the first chapter on JavaScript basics for free. It’s a no-brainer to give him a try!

Course Length: 29.5 Hours

Ratings: 4.7/5.0

Students: 41,000+

Access: Lifetime

4. JavaScript – The Complete Guide 2021 (Beginner + Advanced)

A comprehensive JavaScript course on Udemy from Maximilian Schwarzmüller, a self-taught web developer who is also a gifted instructor. Almost 1.3 million students study from his courses on Udemy.

The instructor will start from the beginning, and he will proceed to a very advanced level (He even teaches TypeScript and Node.js at the end)

Max's JavaScript Course on Udemy
Max’s JavaScript Course

Course Content

  • Introduction to JavaScript (Java vs. JavaScript, Set up a development environment)
  • Variables, Data Types, Operators and Functions
  • Debugging and Configuration of IDE + Error Handling
  • Control Structures + How JavaScript operates behind the scenes
  • Modern JavaScript (ES5, ES6+)
  • DOM in JavaScript (JS in the browser)
  • Arrays, Iterables and Objects
  • Classes and Object-Oriented Programming (OOP)
  • Async JavaScript (Promises and Callbacks)
  • HTTP Requests, Libraries and Modules
  • Workflows and Tooling (ESLint and Webpack)
  • Reflect API and Proxy API
  • Introduction to Node.js and JavaScript libraries such as jQuery and React
  • Security Issues
  • Performance Optimization of web applications
  • Running automated tests with JavaScript
  • Bonus Content: Different programming paradigms, TypeScript, Data Structures and Web components
  • and many more

Besides course videos, the instructor provides you with tons of resources: examples, quizzes, assignments, and projects. You will get as many as 696 downloadable resources from the course.

Comments and Tips

I have taken two of his courses, albeit not this one, and have had a great experience with them.

I am sure this course is for everyone who seeks to understand JavaScript thoroughly. The instructor will not only explain how you use JavaScript but also how JavaScript works behind the scenes.

As usual, the course is full of useful resources, especially the examples, which could supplement the course well. You can utilize them along with course videos to better understand the concepts.

Though this is a comprehensive JavaScript course, it leans toward the theoretical side. It might not suit you if you would like to focus on building real web apps of your own.

Course Length: 52 Hours

Ratings: 4.6/5.0

Students: 62,500+

Access: Lifetime

5. JavaScript Tutorial and Projects Course

If none of the above impresses you, I suggest you take this comprehensive JavaScript course by John Smilga, another knowledgeable web developer with whom I took the online course.

However, John assumes you have prior HTML and CSS knowledge. Those who are not familiar have to take a course beforehand.

John's JavaScript tutorial and Projects Course
John’s JavaScript tutorial and Projects Course

Course Content:

  • Introduction and VS Code Set up
  • JavaScript Basics (Variables, Data Types, Arrays, Functions, Objects, Conditional Statements)
  • Loops and Logical Operators
  • Fundamental knowledge of JavaScript: String properties, Template Literals, Global/Local Scope, Arrays, Iterators, etc.
  • Deep dive on DOM (Elements, DOM Navigation, Events and many more)
  • Object-Oriented Programming
  • JavaScript ES6+, Modules and Async JavaScript
  • AJAX
  • and many more

Even though this is a comprehensive course, it leans toward being a project-based course. You will learn JavaScript mostly by doing projects. There are more than 20 of them available for you to complete.

Comments and Tips

John is a detail-oriented instructor. He tries to explain all content deeply and clearly. However, his voice is a bit mumbled, so it’s slightly difficult to understand him completely.

This course is a well-structured JavaScript tutorial. You can start with the concepts and get used to JavaScript programming as you progress through the course. When you reach the second half of the course, you will be ready to build real-world applications.

Also, John sorted every project in order. You can start with the easiest project by building a color flipper. Every single project is increasingly difficult, which could give you both challenge and confidence along the way.

Upon completion, you will be comfortable using JavaScript to build an e-commerce store or any web pages using JavaScript.

This is undoubtedly one of the best vanilla JavaScript courses (no libraries) for new learners who want to learn by doing.

Course Length: 40 Hours

Ratings: 4.8/5.0

Students: 13,400+

Access: Lifetime

6. Learn JavaScript (Codecademy)

If you are bored with videos, why don’t you try Codecademy? This platform teaches almost every programming language interactively (similar to Datacamp for data science courses.)

You can learn JavaScript by reading through guidelines and finish coding challenges according to instructions. Unlike other courses, you will be able to code entirely on the website or the app. This means you can learn and practice on mobile as well.

Codecademy Platform to learn JavaScript

Course Content:

The courses are divided into two groups, beginner and intermediate.

All beginners should start by taking the Learn JavaScript course. This tutorial covers all JavaScript basics, such as variables, functions, scope, arrays, and loops. More advanced concepts such as Async, classes, iterators, and objects are also included as well.

Next, you could learn JavaScript libraries such as Vue, React, or Angular or a runtime environment such as Node. Alternatively, you can select a career path to pursue, including a full-stack engineer or front-end engineer sequence.

You can try Codecademy by taking lessons from the Learn JavaScript course for free. However, if you want to take courses beyond that or access projects and guides, you have to subscribe to Codecademy Pro.

The monthly subscription starts at $16 for all learners. Students could get a 35% discount from that price.

Once you subscribe, you will be able to access all content on the website. This would include courses on other programming languages such as Python, C++, PHP, and many more.

Comments and Tips

As I have taken several getting started courses (Python, SQL, and JavaScript) from Codecademy for free, I found out that they are very user-friendly and gamelike.

I got addicted very easily, so I could continue learning for hours, which is much longer than I could with Udemy courses.

The only drawback is that Codecademy courses are much less in-depth compared to Udemy courses. You won’t have detailed explanations of complex JavaScript concepts and many other tips and tricks on using JavaScript.

Thus, completing an entire course is certainly insufficient for learners to build real-world applications like web developers.

Still, Codecademy is one of the best training courses for absolute beginners who want to learn JavaScript but would like to test the waters first.

You can get a good first impression of JavaScript and programming here and then move forward to video courses.

Access: Free, Monthly, Annually

Best Advanced JavaScript Courses

Next, I will discuss the best JavaScript courses for advanced learners. In these online courses, you will learn mostly about vanilla JavaScript. However, some courses will provide you an intro on libraries and frameworks as well.

Courses will be either project-based or theoretical. This will significantly enhance your skills in JavaScript programming and web development. After completion, you may be ready to apply for a developer position.

7. JavaScript Web Projects: 20 Projects to Build Your Portfolio

This is a project-based JavaScript course on Udemy created by Andrei Neagoie and Jacinto Wong. Both are self-taught web developers. Interestingly, Jacinto managed to secure a senior developer career after learning to program from online courses for 4 months.

As a project-based course, you should prepare to code intensively. This course is also not for beginners. Learners are expected to possess a knowledge of JavaScript, HTML, and CSS before starting the first lesson.

Andrei and Jacinto's JavaScript  course - one of the best online JS project courses
Andrei and Jacinto’s JavaScript Project course

Course Content

The structure of this JavaScript course is straightforward. Projects, Projects, and Projects. There are more than 20 of them in total.

For example, you will learn to build a quote generator, a music player app, a bookkeeper app, a math sprint game, and many more.

Each of them is sorted in order from basic to advanced. The instructors provide guidance, hints, and solutions to help you complete the project.


I have already bought the course. However, I have not finished the majority of it. This is only going to be a partial review.

Based on my experience, this is a great course. You will take a chance to put your JavaScript knowledge into practice. This will help improve your understanding of the JavaScript language and its applications.

By the way, some projects are quite difficult. However, that’s intentional since both instructors would like to push you to the limit.

When you manage to complete any single project, you will be so proud of yourself and realize that your dream of becoming a programmer is out of reach.

One great thing about this course is that you will use JavaScript’s latest features and browser APIs in your projects. After completing the course, you will be familiar with the newest web technologies, a skill which is wanted by many employers.

Course Length: 32.5 Hours

Ratings: 4.7/5.0

Students: 12,900+

Access: Lifetime

8. Programming for the Web with JavaScript

For those fond of learning in a university-like environment, this online JavaScript course by the University of Pennsylvania is probably your best fit.

This course is not for beginners. Understanding of Basic JavaScript or any programming language is required. In other words, you need to understand variables, functions, control flow, and data structures (arrays, lists, etc.)

edX's UPenn Advanced JavaScript Course
edX’s UPenn Advanced JavaScript Course

Course Content:

  • Fundamentals of web technologies – You will understand how the World Wide Web handles data transmission and useful tools and frameworks to create robust web apps.
  • Simple web page creation: using HTML and CSS
  • Bootstrap (CSS framework used as advanced web design tools)
  • DOM and how a browser represents web page data. You will also learn how to create a modern website by using JavaScript.
  • jQuery for simple DOM Manipulation and Event Handling
  • Client-side web frameworks: You will learn about two web development libraries that are written with JavaScript. This includes the React library to create modular web page components and the D3 library to build data-driven documents.
  • Using JSON to exchange data
  • Accessing RESTful APIs on the web
  • Server-side JavaScript: You will keep up with the web development industry trend by learning to use JavaScript on the server-side. The instructors will discuss how to use Node and Express to create and deploy complex web applications.
  • Integrate with NoSQL technologies such as MongoDB

You can take this course for free, but if you want a certificate and graded assignments. You need to pay $149 for this course.

Another interesting option is to pay $536.40 for a Professional Certificate in Computer Science Essentials for Software Development program. There will be three other software development courses for you to complete.

Comments and Tips

Though I am not a fan of this learning style, I admit this advanced JavaScript course from the University of Pennsylvania is among the best online. These are the key strengths of this online course.

  • You will learn web development with experts from an Ivy League school.
  • This course teaches how to use JavaScript with other real-world tools and frameworks. This would increase your capability as a web developer significantly.
  • You will understand both sides of web development and be ready to tackle all online courses in web development frameworks. Soon, you will be able to build web and mobile applications of your own.

If possible, I recommend paying for a full course. The reason is that your assignments will be graded, so you will be sure that you are on the right track.

Course Length: Recommended 4 Weeks, 6-8 Hours a Week

9. JavaScript: Understanding the Weird Parts

If you would like to understand advanced JavaScript concepts, this online course by Anthony Alicea is worth trying.

You will understand how JavaScript works in the background, enabling you to debug your code faster and more efficiently. After you finish the course, your understanding of JavaScript will be absolute!

JavaScript: Understanding the Weird Parts - best advanced JavaScript course from Anthony Alicea
JavaScript: Understanding the Weird Parts created by Anthony

Course Content:

  • Execution Context and Lexical Environments (Scope Chain, Async callbacks included)
  • JavaScript Types and Operators
  • Objects and Functions (A deep dive on Object Literals, Functions Statement, Closures and Functional Programming)
  • Classical vs. Prototypal Inheritance
  • Building Objects (Function constructors)
  • jQuery source code analysis
  • A guide to building your own framework or library
  • and many more

This course is mostly theoretical. The instructor will provide you beneficial resources, such as the source code and comparison tables, to help you understand the content.

Unlike JavaScript tutorials, this course will have no coding challenges or projects.

Comments and Tips

This lifetime access course is a solution to solve many problems that JavaScript developers are facing: Bugs.

Anthony will train you to write efficient and bug-free code. Furthermore, if any bug exists, you will know how to perform a sophisticated debug to clear them yourself.

The second part of the course is interesting. You will use the jQuery library as a code sample and analyze them carefully to understand the basics of good code and write them.

In the end, you will learn to build your unique framework as well. This will be very helpful when you go beyond vanilla JS, as you understand the structure behind any framework or library by heart.

Course Length: 11.5 Hours

Ratings: 4.7/5.0

Students: 156,000+

Access: Lifetime

10. JavaScript: The Advanced Concepts

Another Udemy course by Andrei Neagoie. However, he is going to tackle advanced JavaScript in this course. Andrei notes that he will bring you beyond the basics and make you become a top 10% JavaScript developer.

Andrei’s Advanced JavaScript Course

Course Content:

  • JavaScript Engine, Runtime, WebAssembly, and how to write optimized code.
  • Execution Context, Lexical Environment, Scope Chain, IIFE
  • Deep dive on JavaScript types
  • Closures & Prototypal Inheritance
  • Object-Oriented vs. Functional Programming
  • Scheme + Java in JavaScript
  • Async JavaScript and Modules
  • Error Handling
  • Data Structures for JavaScript (for those who will be interviewed by tech companies)
  • and many more
  • JavaScript reviews (ES6 up to ES2020)

The review is almost 6 hours long. It will help you refresh your memory without having to search elsewhere.

Comments and Tips

On the surface, this course looks like another JavaScript tutorial. However, it’s not. Andrei will spend time answering “why” questions.

For example, why do you need to do this and that in JavaScript? Why does this not work in JavaScript? and many more

Compared to Anthony’s course, both cover mostly identical topics. However, this course focuses more on strengthening your theoretical understanding of each core concept. You will not build your own framework, but you will answer advanced JavaScript questions in the interview with ease.

As usual, Andrei provides you quizzes and exercises to help you master what you learn. You can review them before your interview as well.

Course Length: 25 Hours (19 without a review)

Ratings: 4.7/5.0

Students: 38,600+

Access: Lifetime

Free Online Courses and Tutorials for JavaScript

These are free JavaScript tutorials that you can learn online. You can get your hands dirty to see whether learning JavaScript and programming is for you.

Below is the list of best JavaScript courses a new programmer can learn on their websites for free.

Freecodecamp – This is probably one of the best free courses for learning JavaScript. Getting started can never be easier. You can learn by following text instructions and code directly into their website.

Udemy Free JavaScript Courses – Udemy also offers many free tutorials that everyone can learn JavaScript for free. Some courses are even longer than 6 hours.

Intro to JS – Khan Academy offers a great course that covers basic JavaScript programming.

Though free courses are beneficial, the quality of content cannot be compared to high-quality paid courses.

If you are determined to develop your web development skills, taking the best JavaScript courses is the paramount strategy to achieve your goals.

Other Interesting JavaScript courses

These paid JavaScript courses received high reviews, but I did not include them in my list for different reasons. However, I realize these online courses might provide value for some. Thus, I decided to write them down here.

  1. Modern JavaScript From The Beginning by Brad Traversy – The course has not been updated since Dec 2019
  2. JavaScript, jQuery, and JSON by the University of Michigan (Coursera) – Video lectures are too brief for serious learners but might help those who desire to audit the course for free.
  3. HTML, CSS, and Javascript for Web Developers by Johns Hopkins University (Coursera) – You will learn all web development tools in one course, which is great. However, the video lectures for JavaScript are too brief.
  4. Coursera Project Network – Coursera has created many concise JavaScript tutorials (2 hours long). These are helpful for beginners, but they are pricey ($9.99 each.) I suggest you take them only if you have Coursera Plus.

Online Courses for JavaScript frameworks and libraries

Learning JavaScript (vanilla js) alone is never adequate for top web developers. You need to master the language’s various libraries and frameworks as well.

As a popular programming language, JavaScript has many powerful libraries and frameworks that help developers build faster, more efficient, scalable, and secure web applications. Below are some that you can learn further.

  • React
  • Angular
  • Vue
  • Node

I will provide the best online courses for them in new articles. However, as of now, they are still not ready. I will provide links to those posts when they are available.

Pun Anansakunwat
Founder of Victory Tale, a multipotentialite who has a particular interest in technology. He loves to spend time testing new products and learning interesting topics to broaden his insights. After graduating from Columbia University in 2014, he makes a living by being a stock market investor, a private tutor, a writer of three published books, and finally a website owner.

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