12 React路由基本的使用（一）

 import Chuli from "./components/Chuli"
   import Clock from "./components/Clock"
   import {Link,Route,NavLink} from "react-router-dom"
   <NavLink to="/chuli" activeClassName="demo">Chuli</NavLink>
   <NavLink to="/clock" activeClassName="demo">Clock</NavLink>
   <Route path="/Chuli" component={Chuli}></Route>
   <Route path="/Clock" component={Clock}></Route>
index.js(脚手架自带的哈) 
// 路由新增加的
import {HashRouter,BrowserRouter} from "react-router-dom"
ReactDOM.render(
   <BrowserRouter>
       <App/>
   </BrowserRouter>,
    document.getElementById('root'));