react我自己还在摸索学习中，今天正好学习一下react-router4 嵌套路由的使用方法，顺便留着笔记

先直接贴代码

import React from 'react';import ReactDOM from 'react-dom';import { HashRouter as Router, Route, Switch} from 'react-router-dom';import createBrowserHistory from 'history/createBrowserHistory';import UserAddPage from './pages/UserAdd/index';import HomePage from './pages/Home/index';import HomeLayout from './components/HomeLayout/index';const hashHistory = createBrowserHistory();const NoMatch = ({ location }) => ( <div> <h3>无法匹配 <code>{location.pathname}</code></h3> </div>)ReactDOM.render(( <Router history={hashHistory}> <div> <HomeLayout>//总会加载这个组件，并且下面 swicth 里面的组件会在它里面 render <Switch> <Route path="/" exact component={HomePage}/> <Route path="/user/add" component={UserAddPage}/> <Route component={NoMatch}/> </Switch> </HomeLayout> </div> </Router>), document.getElementById('root'));

参考文章：https://stackoverflow.com/questions/42095600/nested-routes-in-v4

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