如何在react word web外接程序中路由？

npm install react-router-dom

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

import Home from './components/Home';
import About from './components/About';
import Contact from './components/Contact';

const App = () => {
  return (
    <Router>
      <Switch>
        <Route exact path="/" component={Home} />
        <Route path="/about" component={About} />
        <Route path="/contact" component={Contact} />
      </Switch>
    </Router>
  );
}

export default App;

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

const Navigation = () => {
  return (
    <nav>
      <ul>
        <li><Link to="/">Home</Link></li>
        <li><Link to="/about">About</Link></li>
        <li><Link to="/contact">Contact</Link></li>
      </ul>
    </nav>
  );
}

const Home = () => {
  return <h1>Home Page</h1>;
}

const About = () => {
  return <h1>About Page</h1>;
}

const Contact = () => {
  return <h1>Contact Page</h1>;
}