React导航栏onClick重定向组件

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

function 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>
  );
}

function Home() {
  return <h1>Home</h1>;
}

function About() {
  return <h1>About</h1>;
}

function Contact() {
  return <h1>Contact</h1>;
}

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