Welcome to Advanced React JS by CodeSanskriti. This premium course is designed for developers who already know React basics and want to build scalable, production-ready, and performance-optimized applications.
You will learn advanced hooks, state management strategies, performance optimization, architecture patterns, testing, and real-world projects — exactly how professional React developers work.
Jump to: React Internals • Advanced Hooks • Custom Hooks • State Management • Performance • Design Patterns • Error Handling • Authentication • Testing • TypeScript • Projects • Interview Prep
🧠 Section 1 — React Internals & Mental Models
Understand how React actually works under the hood.
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Lesson 1 — How React Really Works (Rendering & Reconciliation)
Deep dive into React rendering, reconciliation, and updates.
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Lesson 2 — Virtual DOM vs Real DOM (Myths vs Reality)
Clear misconceptions and understand how React optimizes updates.
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Lesson 3 — React Component Lifecycle (Modern Hooks View)
Lifecycle concepts explained using hooks.
⚛️ Section 2 — Advanced React Hooks
Master complex state, refs, and advanced hook behavior.
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Lesson 4 — useReducer Hook (Advanced State Logic)
Managing complex state transitions cleanly.
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Lesson 5 — useRef Hook (Beyond DOM Access)
Mutable values, avoiding re-renders, and advanced use cases.
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Lesson 6 — forwardRef in React
Passing refs through components safely.
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Lesson 7 — useImperativeHandle Hook
Exposing controlled imperative APIs.
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Lesson 8 — useLayoutEffect vs useEffect
Choosing the right effect hook for performance.
🔁 Section 3 — Custom Hooks Mastery
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Lesson 9 — What Makes a Good Custom Hook
Design principles and rules of custom hooks.
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Lesson 10 — Utility Custom Hooks
Building hooks like useToggle and useDebounce.
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Lesson 11 — API Custom Hooks (useFetch / useAsync)
Reusable data-fetching logic with cleanup.
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Lesson 12 — Authentication Custom Hook (useAuth)
Centralizing authentication logic.
🧠 Section 4 — Advanced State Management
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Lesson 13 — Redux Toolkit (Advanced Concepts)
Async state, slices, and scalable Redux architecture.
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Lesson 14 — Normalizing State with Redux Toolkit
Entity adapters and normalized state patterns.
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Lesson 15 — Context vs Redux vs React Query
Choosing the right tool for the right problem.
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Lesson 16 — React Query / TanStack Query
Server-state management, caching, and mutations.
⚡ Section 5 — Performance Optimization
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Lesson 17 — Memoization Deep Dive
React.memo, useMemo, and useCallback explained clearly.
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Lesson 18 — React Profiler (Hands-On)
Finding and fixing performance bottlenecks.
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Lesson 19 — Optimizing Large Lists
Virtualization and efficient rendering strategies.
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Lesson 20 — Code Splitting & Lazy Loading
Reducing bundle size and improving load time.
🏗️ Section 6 — Advanced React Design Patterns
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Lesson 21 — Container vs Presentational Components
Separating logic from UI.
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Lesson 22 — Higher-Order Components (HOC)
Reusing logic using HOC patterns.
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Lesson 23 — Render Props Pattern
Sharing behavior using render props.
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Lesson 24 — Compound Components Pattern
Building flexible and expressive component APIs.
🛡️ Section 7 — Error Handling & Robust Apps
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Lesson 25 — Error Boundaries (Advanced)
Preventing UI crashes in production apps.
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Lesson 26 — Global Error Handling Strategies
Centralized and user-friendly error handling.
🔐 Section 8 — Authentication & Security
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Lesson 27 — Authentication Architecture in React
Understanding JWT flows and frontend auth design.
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Lesson 28 — Role-Based Access Control (RBAC)
Protecting UI based on user roles.
🧪 Section 9 — Testing React Applications
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Lesson 29 — Testing Strategy & Philosophy
What to test and what not to test.
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Lesson 30 — Testing React Components
Testing UI behavior and user interactions.
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Lesson 31 — Testing Forms & API Calls
Mocking APIs and validating form behavior.
🔷 Section 10 — TypeScript with React
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Lesson 32 — TypeScript Fundamentals for React
Typing props, state, and events.
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Lesson 33 — Advanced TypeScript Patterns
Generics and reusable typed components.
🚀 Section 11 — Advanced React Projects
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Project 1 — Advanced Admin Dashboard
Auth, roles, API-heavy architecture.
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Project 2 — Dynamic Form Builder
Schema-driven forms and validation engine.
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Project 3 — SaaS-Style Frontend
Subscription UI and protected flows.
🎯 Section 12 — Interview & Career Mastery
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Lesson 34 — Advanced React Interview Questions
Real interview scenarios and explanations.
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Lesson 35 — React System Design Interviews
Designing scalable React applications.