Read code. Fix bugs. Build real skills.

A different way to practice JavaScript.

How debugit works

Analyze and Test

Read the provided code snippet and try to spot the bug. Run the tests to get hints about what’s broken and why.

Debugging interface showing code and failing tests

Fix and Validate

Experiment with the code, test assumptions, and debug it step by step. Write your solution and run the tests to see if it works.

Code editor with a bug fixed and tests passing

Review and Learn

Break down JavaScript concepts, common pitfalls, and best practices. Learn why the bug occurred, how the fix works, and how to prevent similar issues.

Detailed explanation of the solution and concepts

Skills you will gain

Master these essential skills that will make you a better developer

Master debugging

Learn to systematically identify, understand, and fix bugs in real-world code.

Better understand JavaScript

Deepen your understanding of JavaScript's quirks and common pitfalls.

Spot patterns and antipatterns

Recognize good and bad practices in code to write cleaner, more maintainable solutions.

Prepare for challenges

Sharpen your skills for technical interviews and real-world debugging problems.

What's Inside?

Hands-on debugging problems

Solve real-world scenarios that mirror production challenges. No artificial exercises, just practical coding challenges.

Integrated code editor & test runner

Debug directly in your browser with instant feedback as you work through the problems.

Detailed explanations & insights

Learn effectively with tips, examples, and theory to deepen your understanding of JavaScript concepts.

Engaging & practical learning

Solving problems is fun, rewarding, and essential for real-world coding skills development.

Start practicing today

The best way to get better at debugging is to practice it.

Start practicing