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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JetBrains Academy

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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.

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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.

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

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

Explore all projects

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

Fundamentals

2 topics

Conditions

2 topics

Interaction with a browser

1 topic

Learn from the industry experts

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

Béla Molnár

4 months ago

It is a good course to start with JavaScript, exercises and projects were very useful.

Denys Halych

4 months ago

Everything is well explained, exercises and projects are very interesting.

Filip Vidimský

6 months ago

with some programming knowledge, but zero of JS, i was able to grasp the weirdnesess of JS. lot of theory can be just quickly checked and skipped, if you know the basics (variables, loops, functions...)