🚀 React.js Mastery — Concept Library

A comprehensive, professional-grade repository documenting React.js mastery — from fundamental JSX patterns to advanced Hooks, Global State, and Custom Logic.

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✨ Key Features

• ⚛️ Fundamentals — JSX syntax, Component composition, and Props.
• 🪝 Hooks Mastery — Deep dives into useState, useEffect, useContext, and useReducer.
• 🔄 Advanced State — Global state management and complex action-reducer patterns.
• 🧩 Reusable Logic — Implementation of Custom Hooks for modular codebase.
• 📡 Async Data — Robust data fetching patterns with loading and error handling.
• 🛠️ Professional Patterns — Clean, documented, and modular component architecture.

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📂 Project Structure

ReactJs/
├── 01-Fundamentals/    # JSX basics, Props, and Rendering
├── 02-Hooks/           # Core and Advanced React Hooks
├── 03-Advanced/        # Custom Hooks, Error Boundaries, etc.
├── 04-Ecosystem/       # React Router, API integration
├── 05-Projects/        # Integrated mini-applications
└── README.md

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🧠 Master Concept Checklist

Concept	File	Status
JSX & Props	01-Fundamentals/JSX_Basics.jsx	✅
Local State	02-Hooks/UseState_Counter.jsx	✅
Side Effects	02-Hooks/UseEffect_DataFetch.jsx	✅
Global State	02-Hooks/UseContext_Theme.jsx	✅
Complex State	02-Hooks/UseReducer_Todo.jsx	✅
Custom Hooks	03-Advanced/Custom_Hook_Example.jsx	✅

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⚙️ Installation & Setup

These files are standalone modules meant for study and reference. To use them in a project:

1. Create a React app (using Vite or CRA).
2. Copy the desired .jsx file into your src/components/ directory.
3. Import and render it in your App.jsx.

import Counter from './components/UseState_Counter';

function App() {
  return <Counter />;
}

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📈 Impact / Highlights

• 🎯 Pure Functional React — Focuses entirely on modern Functional Components and Hooks.
• 🛡️ Clean Code — Every concept is implemented with self-explanatory comments and logical flow.
• 📊 Scalable Reference — Built to serve as a long-term reference library for React development.

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📜 License

This project is licensed under the MIT License.

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Built with ❤️ by Vaishnavi Dubey