这是我的代码,我相信我已经正确导入了所有内容,我正在使用 React mdl 设置样式并复制并粘贴导航栏代码。 我还正确安装了 react dom router,显示了各个页面,但导航栏本身不在登录页面上。 谁能帮我?谢谢
App.js
import React, { Component } from "react";
import "./App.css";
import { Layout, Header, Navigation, Drawer, Content } from "react-mdl";
import Earth from "./earth.jpg";
import Main from "./components/main";
import { Link } from "react-router-dom";
class App extends Component {
render() {
return (
<div style={{ height: "300px", position: "relative" }}>
<Layout style={{ background: "src{Earth} center / cover" }}>
<Header transparent title="Title" style={{ color: "white" }}>
<Navigation>
<a href="/aboutme">Link</a>
<a href="/projects">Link</a>
<a href="/resume">Link</a>
<a href="/contact">Link</a>
</Navigation>
</Header>
<Drawer title="Title">
<Navigation>
<Link to="/aboutme">About Us</Link>
<Link to="/projects">Projects</Link>
<Link to="/resume">Resume</Link>
<Link to="/contact">Contact</Link>
</Navigation>
</Drawer>
<Content>
<div className="page-content">
<Main />
</div>
</Content>
</Layout>
</div>
);
}
}
export default App;
主要.js
import React from 'react';
import { Switch, Route} from 'react-router-dom';
import LandingPage from './landingpage';
import AboutMe from './aboutme';
import Contact from './contact';
import Projects from './projects';
import Resume from './resume';
const Main = () => (
<Switch>
<Route exact path="/" component = {LandingPage} />
<Route path="/aboutme" component = {AboutMe} />
<Route path="/contact" component = {Contact} />
<Route path="/projects" component = {Projects} />
<Route path="/resume" component = {Resume} />
</Switch>
)
export default Main;
索引.js
import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import * as serviceWorker from './serviceWorker';
import 'react-mdl/extra/material.css';
import 'react-mdl/extra/material.js';
import { BrowserRouter } from 'react-router-dom';
ReactDOM.render(
<BrowserRouter>
<App />
</BrowserRouter>
, document.getElementById('root'));
serviceWorker.unregister();
最佳答案
您需要使用来自 react-router-dom 的 BrowserRouter
包装您的 App 组件。
您可以在 App 组件中执行此操作,或者像这样在 index.js 中执行此操作更好:
import { BrowserRouter } from "react-router-dom";
ReactDOM.render(<BrowserRouter><App/></BrowserRouter>, rootElement);
代码框:
关于javascript - 为什么我的导航栏没有在 React 中呈现?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58902372/