Single Page Applications (SPAs) are web applications that load a single HTML page and dynamically update that page as the user interacts with the app. This approach allows for a smoother user experience compared to traditional multi-page applications (MPAs), where each interaction often requires a full page reload.

Library to use for routing - https://reactrouter.com/en/main

• Install react-router-dom

npm i react-router-dom

• Update App.jsx with the respective routes

import ReactDOM from "react-dom/client";
import { BrowserRouter, Routes, Route } from "react-router-dom";
import Layout from "./pages/Layout";
import Home from "./pages/Home";
import Blogs from "./pages/Blogs";
import Contact from "./pages/Contact";
import NoPage from "./pages/NoPage";

export default function App() {
  return (
    <BrowserRouter>
	    <Routes>
        <Route index element={<Home />} />
        <Route path="blogs" element={<Blogs />} />
        <Route path="contact" element={<Contact />} />
        <Route path="*" element={<NoPage />} />
      </Routes>
    </BrowserRouter>
  );
}

const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<App />);

Code from class

import './App.css'
import { BrowserRouter, Routes, Route, Link } from "react-router-dom";

function App() {

  return <div>
    <BrowserRouter>
      <Link to="/">Allen</Link>
      | 
      <Link to="/neet/online-coaching-class-11">Class 11</Link> 
      | 
      <Link to="/neet/online-coaching-class-12">Class 12</Link>
      <Routes>
        <Route path="/neet/online-coaching-class-11" element={<Class11Program />} />
        <Route path="/neet/online-coaching-class-12" element={<Class12Program />} />
        <Route path="/" element={<Landing />} />
      </Routes>
    </BrowserRouter>
  </div>
}

function Landing() {
  return <div>
    Welcome to allen
  </div>
}

function Class11Program() {
  return <div>
      NEET programs for Class 11th
  </div>
}

function Class12Program() {
  return <div>
      NEET programs for Class 12th
  </div>
}

export default App