react withRouter

 1 import React from ‘react‘
 2 import ‘./nav.css‘
 3 import {
 4     NavLink,
 5     withRouter
 6 } from "react-router-dom"
 7 
 8 class Nav extends React.Component{
 9     handleClick = () => {
10         // Route 的 三个对象将会被放进来, 对象里面的方法可以被调用
11         console.log(this.props);
12     }
13     render() {
14         return (
15             <div className={‘nav‘}>
16                 <span className={‘logo‘} onClick={this.handleClick}>博客园</span>
17                 <li><NavLink to="/" exact>随笔</NavLink></li>
18                 <li><NavLink to="/activities">文章</NavLink></li>
19                 <li><NavLink to="/topic">日记</NavLink></li>
20                 <li><NavLink to="/login">评论</NavLink></li>
21             </div>
22         );
23     }
24 }
25 
26 // 导出的是 withRouter(Nav) 函数执行
27 export default withRouter(Nav)