Introduction to JavaScript

4.513 hours36K learnersCertificate
Say hello to JavaScript, a popular multi-purpose language. Practice your skills and knowledge by building several self-contained projects and apps.
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What you'll learn

Are you eager to develop front-end, back-end, or even mobile apps? JavaScript can help you with that.

Explore the realm of coding with accessible and straightforward projects that seamlessly guide you into the foundational concepts of JavaScript. During the course, you will:

  • Create your first JavaScript program for your GitHub portfolio;

  • Utilize data types, variables and arrays to unlock capabilities of JavaScript;

  • Master conditions and loops to structure your program adeptly;

  • Create concise and intelligible JavaScript code;

  • Develop proficiency in writing and debugging functions.

 

Topics covered by this course

Working with data
14 topics
Introduction to JavaScript
6 topics
Functions
6 topics
Operations
5 topics
Data types
4 topics
Loops
3 topics
Code style
3 topics
Software development foundations
2 topics
Conditions
2 topics
Interaction with a browser
1 topic

Learn by doing

# 1
Apply knowledge into practice
You already know the theory. Now it's time to code like you do at work—in a professional IDE, with real project constraints, solving problems that actually matter. Welcome to software engineering as it should be.
# 2
Navigate complexity with surgical precision
Most developers waste months learning random concepts without seeing how they connect. Our interactive Knowledge Map fixes this. It shows exactly how every programming concept relates to others, helping you build a structured mental model of coding.
# 3
Copy the best. Then improve.
Here's what top engineers do that others don't: they study other people's code obsessively. When you get stuck on Hyperskill, you can explore solutions published by other developers. See their exact code. Understand their approach. Learn their tricks.
# 4
Code review that actually makes you better
We stripped code review down to what actually matters: does your solution work? Have you handled the edge cases? Is there a cleaner way to write this? Hyperskill acts like a competent reviewer who actually tests your code. Not genius-level analysis, not architecture debates — just solid feedback on making your code better.

Elevate your engineering mastery through real-world challenges

Master advanced engineering concepts through ambitious projects. Each project deepens your expertise and transforms you from an experienced engineer into an exceptional one.

Simple Currency Converter

Have you ever wondered how many Japanese yens you can have for 100 USD? In this project, you will write a program that converts a provided currency to another. In addition, you will improve your programming skills with JavaScript and get more comfortable using it!

Graduate

Hangman (JavaScript)

Hangman is a popular yet grim puzzle game. A cruel computer hides a word from you, which you try to guess letter by letter. If you fail, you'll be “hanged”. If you win, you'll survive. You’ve probably played the game at least once or twice. Now you can actually create this game yourself!

Graduate

Coffee Machine (JavaScript)

What can be better than a cup of coffee during a break? Two cups. Press a couple of buttons on the machine, and, voilà, a burst of raw energy is in your hands. But first, we should teach the machine how to do it. In this project, you will work on a coffee machine simulator. This machine uses regular ingredients — coffee, milk, and plastic cups. Should it run out of something, it will show you a notification. Our device will serve espresso, cappuccino, and latte. And since nothing is for free, it will also charge coffee lovers for a cup.

Graduate

Explore all projects

Learn from the industry experts

JetBrains Academy

JetBrains Academy

JetBrains Academy is a part of JetBrains, a global software company specializing in the creation of intelligent, productivity-enhancing tools for software developers and teams. With years of expertise in software development and education, JetBrains Academy empowers more than a million people worldwide to learn and teach computer science, and help organizations inspire their teams to reach their goals in tech. Professional development tools play a big role in computer science education. This is why JetBrains Academy courses offer integration with JetBrains IDEs. This integration assists learners in getting experience with real development processes to streamline their learning curve at future work.

Your peers think Hyperskill rocks

Juan Esteban Serrano Aldana
4 months ago
As an introductory course, I think it’s good enough, especially the final projects, since they explore the language’s basic capabilities in their entirety. The rest of the exercises are fairly simple for a beginner, but I wish there were a more comprehensive version to help me fully master the langu ...
David Alves avatar
David Alves
8 months ago
I really enjoyed the course and the projects. Although it was an introduction, it reminded me of many things and reinforced others. It was very important to review the basic concepts before moving on to more advanced courses; it even helps to see how the HyperSkill platform works.
Béla Molnár
1 year ago
It is a good course to start with JavaScript, exercises and projects were very useful.

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Sudo Userhas successfully completed the courseIntroduction to JavaScript
Issue date September 4, 2026
46 topics completed

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