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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 Debounced Search with AbortController in React: Best Practices and Common Pitfalls
Hard
SearchReactAbort controller+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
ConcurrencyReactWeb workers+2
How to Handle Rejected Promises with Promise.all() Using Async/Await in JavaScript
Medium
PromisesAsyncError handling
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
AsyncMemory leaksCleanup+1
React: How to Fix Inaccurate Time Ago Display in Social Media Posts
Medium
Date manipulationReactReact hooks+3
React Performance: Optimizing Large Dataset Rendering in a Spreadsheet-like Grid Component
Hard
ReactPerformanceEvent handling+1
Understanding Post-Increment and Pre-Increment Operators in JavaScript Assignment
Easy
Understanding JavaScript Increment Operators and Console Output Basics
Easy
JavaScript Array Methods: Understanding map, reduce, and filter Operations on Number Array
Easy
How to Get the Last Element of an Array in JavaScript: Different Methods Explained
Easy
JavascriptArraysMethods
Two Sum Pairs
Medium
Understanding JavaScript Promise Execution Order with Async/Await and setTimeout
Hard
PromisesEvent loop
JavaScript Comparison: Understanding the Difference Between == and === Operators
Easy
JavascriptType coercion