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Intro in ReactJS

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Intro in ReactJS

βœ… public β†’ Static files like images, icons, and fonts.


πŸ“Œ Step 5: Write Your First Component

React uses components to build the UI. Here’s a simple functional component:

App.jsx

jsx

import React from 'react';const App = () => { return ( <div> JSX (JavaScript XML) β†’ Syntax that looks like HTML but works in JavaScript.


πŸ“Œ Step 6: Render the Component

React needs to render the component into the root index.html.

main.jsx

jsx

import React from 'react';import ReactDOM from 'react-dom/client';import App from './App.jsx';import './index.css';ReactDOM.createRoot(document.getElementById('root')).render( <React.StrictMode> Inline Styles β†’ Use style={{ color: 'blue' }} directly in JSX.

  • CSS Modules β†’ Use scoped styles by importing .module.css.

  • Example using inline style:

    jsx

    <h1 style={{ color: 'blue' }}>Hello, React!</h1>


    πŸ“Œ Step 8: Adding Interactivity

    You can add interactivity using State and Events.

    Example using useState Hook:

    jsx

    import React, { useState } from 'react';const Counter = () => { const [count, setCount] = useState(0); return ( <div> <h1>Count: {count}</h1> <button onClick={() => setCount(count + 1)}>Increment</button> </div> );};export default Counter;

    • useState() β†’ Hook for managing state.

    • onClick β†’ Event handler.


    πŸ“Œ Step 9: Build for Production

    When you're ready to deploy:

    bash

    npm run build

    • Output files will be in the /dist folder.

    • Optimized for production.


    βœ… Next Steps

    • Learn about Components and Props.

    • Manage state using useState and useEffect hooks.

    • Explore Routing with react-router-dom.

    • Fetch data using Axios or Fetch API.

    • Apply styling with CSS or libraries like Tailwind CSS.

    Disclaimer for AI-Generated Content:
    The content provided in these tutorials is generated using artificial intelligence and is intended for educational purposes only.
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