Getting Started with React: A Beginner's Guide

React is a JavaScript library for building user interfaces, developed and maintained by Facebook.

Key Concepts:

• Components: Building blocks of a React application, can be class-based or functional.

• JSX: JavaScript XML, a syntax extension that allows writing HTML in React.

• State and Props: State is local to the component, while props are used to pass data between components.

Getting Started:

1. Installation:

   1 2 3 npx create-react-app my-app cd my-app npm start

2. Creating a Component:

   1 2 3 4 5 6 7 import React from 'react'; function Welcome(props) { return <h1>Hello, {props.name}</h1>; } export default Welcome;

3. Using the Component:

   1 2 3 4 5 import React from 'react'; import ReactDOM from 'react-dom'; import Welcome from './Welcome'; ReactDOM.render(<Welcome name="World" />,document.getElementById('root'));