🔥 *Advanced JavaScript Concepts Cheatsheet* ✅ 📌 *1. Closures & Scope* - Functions remembering their lexical environment - Use cases: data privacy, function factories 📌 *2. Prototypes & Inheritance* - Prototype chain explained - `Object.create()`, prototype methods - ES6 classes and inheritance syntax 📌 *3. Event Loop & Asynchronous JS* - Call stack, task queue, microtasks - Event loop mechanics - Promises, async/await in-depth 📌 *4. Higher-Order Functions* - Functions that take/return functions - Examples: `map()`, `filter()`, `reduce()` 📌 *5. Modules & Bundling* - ES6 modules (import/export) - Tools: Webpack, Rollup basics 📌 *6. Memory Management* - Garbage collection basics - Avoiding memory leaks 📌 *7. Functional Programming Concepts* - Pure functions, immutability - Currying, composition 📌 *8. Design Patterns* - Singleton, Observer, Factory in JS context --- 💡 *Practice:* Build projects using async APIs, classes, and modular code! ✅ *React ❤️ for more*