如何在React中创建和管理动态路由

在React中，可以使用React Router来创建和管理动态路由。以下是一个简单的示例：

1. 首先，安装React Router库：

npm install react-router-dom

2. 在App.js中导入React Router并设置路由：

import React from 'react';
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';

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

export default App;

3. 创建组件Home.js，About.js和Contact.js：

import React from 'react';

const Home = () => <h1>Home</h1>;

export default Home;

import React from 'react';

const About = () => <h1>About</h1>;

export default About;

import React from 'react';

const Contact = () => <h1>Contact</h1>;

export default Contact;

4. 在index.js中渲染App组件：

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';

ReactDOM.render(<App />, document.getElementById('root'));

现在，您可以通过访问http://localhost:3000/来查看Home页面，访问http://localhost:3000/about来查看About页面，访问http://localhost:3000/contact来查看Contact页面。这样您就成功创建和管理了动态路由。