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Coding Challenges
Explore our collection of coding challenges and practice questions. Filter by topic, difficulty, and more to find the perfect challenges for your learning journey.
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Implementing WebSocket Logic for Real-Time Collaborative Whiteboard in React
Hard
ReactWebsocketsReal time+1
React Infinite Scroll Implementation with Data Caching and Intersection Observer - Best Practices and Fixes
Medium
ReactReact hooksInfinite scroll+3
Optimizing React Product List Performance: Fixing Inefficient Filtering and Sorting Implementation
Hard
ReactReact hooksPerformance+3
How to Create a Custom Keyboard Shortcut Hook in React with Event Handling
Medium
ReactKeyboard eventsCustom hooks+1
Fix React Shopping Cart Component State Synchronization Issue
Easy
ReactState managementForms+2
Implementing Debounced Search with AbortController in React: Best Practices and Common Pitfalls
Hard
ReactDebounceSearch+1
Security Vulnerability: Using localStorage for JWT Authentication in React Router Private Routes
Medium
ReactReact hooksAuthentication+3
React Shared Worker Implementation: Common Pitfalls and Memory Leak Issues
Hard
ReactWeb workersShared workers+2
How to Handle Rejected Promises with Promise.all() Using Async/Await in JavaScript
Medium
PromisesError handlingAsync
Understanding JavaScript Closure Behavior with Object Properties and Multiple Counter Instances
Medium
ClosuresObjectsGetters setters+1
Fixing Memory Leaks in Asynchronous Event Emitter Implementation with Proper Cleanup
Hard
Event emitterAsyncMemory leaks+1
React: How to Fix Inaccurate Time Ago Display in Social Media Posts
Medium
ReactReact hooksDate manipulation+3
React Performance: Optimizing Large Dataset Rendering in a Spreadsheet-like Grid Component
Hard
ReactPerformanceVirtualization+1
Understanding Post-Increment and Pre-Increment Operators in JavaScript Assignment
Easy
Understanding JavaScript Increment Operators and Console Output Basics
Easy