Read code. Fix bugs. Build real skills.

A different way to practiceJavaScript

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

Better understand JavaScript

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

Master debugging

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

Prepare for challenges

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

Improve code reading skills

Understand unfamiliar code faster and improve your productivity.

Start for free

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

Start practicing

Frequently Asked Questions