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 Deep Reactive Object Tracking with JavaScript Proxies for Nested Properties
Hard
JavascriptProxyReactive programming+2
Implementing a Promise Queue with Concurrent Operation Limits in JavaScript
Medium
JavascriptPromisesConcurrency+2
How to Safely Extend JavaScript Built-in Prototypes for a Plugin System
Hard
JavascriptPrototypesObject properties+2
Implementing a Type-Safe Event Emitter with Wildcard Pattern Support in JavaScript
Medium
JavascriptEventsPatterns+2
Implementing Memory-Safe Caching in JavaScript Using WeakRef and WeakMap
Hard
JavascriptWeakrefGarbage collection+2
Implementing a Generator Composition Function in JavaScript for Data Processing Pipeline
Hard
JavascriptGeneratorsIterators+2
How to Implement a Virtual DOM Patch Function for DOM Updates in JavaScript
Hard
JavascriptVirtual domDom manipulation+3
Implementing the pipe() Method in JavaScript Observable Pattern with Operators
Medium
JavascriptObservablesOperators+2
Implementing a Dynamic Module Loader with Async/Sync Support in JavaScript
Hard
JavascriptModulesAsync+3
Implementing an Async Middleware Chain System in JavaScript with Error Handling
Medium
JavascriptMiddlewareAsync await+2
Implementing a JavaScript Tree Iterator with Multiple Traversal Strategies using Generators
Hard
JavascriptIteratorsGenerators+2
Understanding JavaScript Event Loop: Order of Execution in Music Player with Promises and setTimeout
Medium
JavascriptEvent loopAsync+3
How to Implement a Shopping Cart with useReducer in React: Handling Duplicates and Quantities
Medium
ReactUsereducerReact hooks+4
How to Properly Clean Up Subscriptions in React useEffect Hook to Prevent Memory Leaks
Medium
ReactReact hooksUseeffect+3
How to Optimize Large Dataset Processing in React Using useMemo and Memoization
Medium
ReactReact hooksUsememo+4