20 challenges available
Learn to read code
AI writes the code. You need to understand it. Practice reading real snippets and sharpen your judgment when working with AI.
20
Challenges
3
Languages
9
Learners
91
Completions
Top Learners
Full leaderboard1
/ 20
2alex_chen
/ 20
3sarah_kim
/ 20
Learning Paths
View all🟨beginner
JavaScript Basics
Master the fundamentals of JavaScript, from conditionals to async patterns.
7 challenges•2 hours
⚛️intermediate
React Hooks Mastery
Deep dive into useState, useEffect, and custom hooks with real-world examples.
4 challenges•3 hours
🔷intermediate
TypeScript Fundamentals
Learn type safety, generics, and utility types to write robust code.
3 challenges•2.5 hours
🚀advanced
Advanced Patterns
Explore closures, decorators, and complex type manipulations.
5 challenges•4 hours
Featured Challenges
View all01
beginnerWhat does this function return?
A common JavaScript function used in almost every AI-generated app.
javascript02
beginnerSpot the async pattern
AI generates this pattern constantly when fetching data from an API.
javascript03
beginnerRead this React hook
The most common React pattern AI writes for managing component data.
typescript