App React Intro — Free App Development Tutorial

TL;DR: Learn App React Intro in App Development with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

App React Intro in App Development

React is a JavaScript library for building user interfaces using a component-based architecture.

React uses a virtual DOM to efficiently update only the parts of the real DOM that have changed.

JSX (JavaScript XML) is React's syntax extension that allows you to write HTML-like code inside JavaScript.

React apps are built by composing small, reusable components that manage their own state and props.

Create React App and Vite are the most common tools for bootstrapping a new React project.

// JSX — looks like HTML but is JavaScript
function Greeting({ name }) {
  return <h1>Hello, {name}!</h1>;
}

// Render to the DOM
import ReactDOM from 'react-dom/client';
const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<Greeting name="World" />);

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