Auto-checked practice
Write code and see right away if it works
After a lesson you solve a task in an editor right in the browser, and the platform checks your solution.
Available
Reading about code only gets you so far. Each lesson ends with a task you solve in an editor with syntax highlighting, and you don't need to install anything.
The check runs your code against test cases, and for HTML it looks at the structure of your markup. You see what passed and what did not, and you fix it right away instead of waiting for a mentor.
What you get
- A code editor in the browser
- Checks against test cases
- Tasks in JavaScript, TypeScript, HTML and more
- Your result shows up in the course right away
Where to find it
Try it on your own lessons
Sign up for free to unlock Ask and practice. Paid plans will be available in the mobile app.
Related features
- Short lessonsEach lesson explains one thing in plain words, with a code example and a task at the end.
- Ask, the AI tutorAsk answers questions about a specific part of a lesson. The AI sees the lesson and keeps the answer short.
- Lesson quizzesA short quiz after the lesson shows what you understood and what is worth reading again.