🌐 React Router & Navigation

 🌐 What is React Router?

React Router is a standard library for routing in React applications. It lets you:


Navigate between pages (components)


Change the URL in the browser


Handle client-side routing without refreshing the page


🚦 Why Use React Router?

✅ Create multi-page experiences

✅ Link between views (e.g., Home → About → Contact)

✅ Support deep linking (e.g., /products/123)

✅ Easily manage navigation programmatically


🧱 Basic Setup

1. Install React Router

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npm install react-router-dom

2. Create Routes

Here’s a simple example:


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// App.js

import React from 'react';

import { BrowserRouter as Router, Routes, Route, Link } from 'react-router-dom';


import Home from './pages/Home';

import About from './pages/About';


function App() {

  return (

    <Router>

      <nav>

        <Link to="/">Home</Link> | 

        <Link to="/about">About</Link>

      </nav>


      <Routes>

        <Route path="/" element={<Home />} />

        <Route path="/about" element={<About />} />

      </Routes>

    </Router>

  );

}


export default App;

3. Create Page Components

jsx

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// pages/Home.js

const Home = () => <h2>Welcome to the Home Page</h2>;

export default Home;


// pages/About.js

const About = () => <h2>About This App</h2>;

export default About;

🔄 Navigation Methods

🧭 Using Links

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<Link to="/about">Go to About</Link>

🚀 Navigate Programmatically

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import { useNavigate } from 'react-router-dom';


const MyComponent = () => {

  const navigate = useNavigate();

  const handleClick = () => navigate('/about');


  return <button onClick={handleClick}>Go to About</button>;

};

🧩 Route Parameters

You can pass dynamic data in the URL:


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<Route path="/user/:id" element={<UserPage />} />

jsx

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// UserPage.js

import { useParams } from 'react-router-dom';


const UserPage = () => {

  const { id } = useParams();

  return <div>User ID: {id}</div>;

};

🛑 404 Not Found Page

Catch unmatched routes:


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<Route path="*" element={<h2>404 Not Found</h2>} />

✅ Summary

React Router enables SPA navigation without reloads


Use <Routes> and <Route> to define paths


Use <Link> or useNavigate() to move between views


Supports dynamic routes and nested routes


Always wrap routing logic inside <BrowserRouter>

Learn React JS Course in Hyderabad

Read More

Best Practices for Managing Forms in React

Integrating React with Yup for Validation

Building a Dynamic Form Component

Validating Forms in React

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