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ReactJS has become a cornerstone in modern web development, and mastering it can significantly boost your career in software engineering. Below is a curated list of free resources, courses, repositories, and projects to help you learn ReactJS effectively.
YouTube Channels to Master ReactJS
- Hitesh Choudhary: Watch Here
- Piyush Agarwal: Watch Here
- Tanish Garg: Watch Here
- Code With Harry: Watch Here
Free Courses to Learn React
- React Fundamentals: Enroll Here
- Frontend Dev Using React: Enroll Here
- React and Redux: Enroll Here
- ReactJS Tutorials: Enroll Here
- Learn React: Enroll Here
Top Repositories to Master React
- React in Patterns: Explore Here
- Real World React Apps: Explore Here
- Beautiful React Hooks: Explore Here
- Awesome React: Explore Here
- 30 Days of React: Explore Here
- React Coding Challenge: Explore Here
- React Developer Roadmap: Explore Here
Must-Follow YouTube Channels for Learning React
- RoadsideCoder.com: Watch Here
- Traversy Media: Watch Here
- JavaScript Mastery: Watch Here
- Academind: Watch Here
- Sonny Sangha: Watch Here
- freeCodeCamp: Watch Here
- Web Dev Simplified: Watch Here
- Codevolution: Watch Here
React Cheat Sheets
React Projects You Must Do
- GitHub Repo for React Projects: Explore Here
React Interview Questions
You Should Know: Practical Steps to Master React
1. Set Up Your Environment:
- Install Node.js and npm:
sudo apt update sudo apt install nodejs npm
- Create a React app:
npx create-react-app my-app cd my-app npm start
2. Learn JSX and Components:
- Create a functional component:
function Welcome(props) { return </li> </ul> <h1>Hello, {props.name}</h1> ; }3. State and Props:
- Use state in a class component:
class Clock extends React.Component { constructor(props) { super(props); this.state = { date: new Date() }; } render() { return </li> </ul> <div>{this.state.date.toLocaleTimeString()}</div> ; } }4. React Hooks:
- Use `useState` and
useEffect:import React, { useState, useEffect } from 'react'; function Counter() { const [count, setCount] = useState(0); useEffect(() => { document.title = <code>You clicked ${count} times</code>; }); return (</li> </ul> <div> You clicked {count} times <button onClick={() => setCount(count + 1)}>Click me</button> </div> ); }5. Routing with React Router:
- Install React Router:
npm install react-router-dom
- Set up routes:
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom'; function App() { return ( <Router> <Switch> <Route path="/about" component={About} /> <Route path="/" component={Home} /> </Switch> </Router> ); }
What Undercode Say
Mastering ReactJS requires consistent practice and hands-on experience. Use the resources provided to build real-world projects, understand core concepts, and prepare for interviews. Combine this knowledge with Linux and Windows commands to streamline your development workflow:
- Linux Commands:
</li> </ul> <h1>Update package list</h1> sudo apt update <h1>Install Git</h1> sudo apt install git <h1>Clone a repository</h1> git clone https://github.com/username/repo.git
- Windows Commands:
</li> </ul> <h1>Check Node.js version</h1> node -v <h1>Create a new directory</h1> mkdir my-project <h1>Navigate to the directory</h1> cd my-project
By following this guide, you’ll be well on your way to becoming a ReactJS expert. Keep coding, keep learning, and stay curious!
Expected Output
A well-structured, comprehensive guide to mastering ReactJS with practical steps, verified commands, and a curated list of resources.
References:
Reported By: Rajatgajbhiye I – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅Join Our Cyber World:
- Windows Commands:
- Install React Router:
- Use `useState` and
- Use state in a class component:



