React导入React后变为空-React

Question

在导入react-router之前，它运行得很好。现在它成功构建了，但显示了一个空白页。这是我的代码：

App.js

//import ReactDOM from "react-dom/client";
import { BrowserRouter, Routes, Route } from "react-router-dom";
import  'bootstrap/dist/css/bootstrap.min.css';
import Pending from './Pages/Home';
import Home from './Pages/Pending';

export default function App() {
  return (
    <BrowserRouter>
      <Routes>
        <Route path="/" element={Home} />
        <Route path="/Pending" element={Pending} />  
      </Routes>
    </BrowserRouter>
  );
}

Home.js

import React, { Component } from "react";
import 'bootstrap/dist/css/bootstrap.min.css';
import NavBar from '../components/NavBar';

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

export default Home;

Answer 1

问题

Route组件API在react-router-dom@6中发生了变化。所有路由的内容现在都在一个element支柱上呈现为一个ReactNode，即a.k.a。JSX，而不是对React组件的引用。

解决方案

将路由组件呈现为JSX，即<Home />而不是Home。

import { BrowserRouter, Routes, Route } from "react-router-dom";
import 'bootstrap/dist/css/bootstrap.min.css';
import Pending from './Pages/Home';
import Home from './Pages/Pending';

export default function App() {
  return (
    <BrowserRouter>
      <Routes>
        <Route path="/" element={<Home />} />
        <Route path="/Pending" element={<Pending />} /> 
      </Routes>
    </BrowserRouter>
  );
}

Answer 2

您应该指定您正在使用的react路由器-dom的哪个版本。所以我假设，你使用的是最新的v6。

在您的App.js文件中，您必须进行以下更改才能工作：

import { Routes, Route } from "react-router-dom";
import  'bootstrap/dist/css/bootstrap.min.css';
import Pending from './Pages/Home';
import Home from './Pages/Pending';
    
    export default function App() {
          return (
             <Routes>
               <Route index path="/" element={<Home />}/>
                  <Route path="pending" element={<Pending />} />  
             </Routes>
          );
    }

欲了解更多信息，请访问官方文档这里!。

Answer 3

import './App.css';

import {   BrowserRouter as Router ,  Route, Routes } from "react-router-dom";
import Header from './Components/Header';
import Footer from './Components/Footer';

import Home from './Components/Home';
import About from './Components/About';


function App() {
  return (
    <>
    <Router>
      <Header/>
        <Routes>
            <Route path="/" element={ <Home/> } />
            <Route path="/About" element={ <About/> } />
        </Routes>
      <Footer/>
    </Router>
    </>
  );
}

export default App;