照着文档来的,代码如下:

import React from 'react'
import ReactDOM from 'react-dom'
import { Router, Route, Link ,browserHistory} from 'react-router'
import { IndexRoute } from 'react-router'

const Dashboard = React.createClass({
  render() {
    return (
Welcome to the app!
)
  }
})

const App = React.createClass({
  render() {
    return (
      

        
App
        

          
About
          
Inbox
        
        {this.props.children}
      

    )
  }
})

const About = React.createClass({
  render() {
    return (
About
);
  }
})

const Inbox = React.createClass({
  render() {
    return (
      

        
Inbox
        {this.props.children || "Welcome to your Inbox"}
      

    )
  }
})

const Message = React.createClass({
  render() {
    return (
Message {this.props.params.id}
)
  }
})


ReactDOM.render((
  
    
      
      
      
        
      
    
  
), document.getElementById('root'))

但是会报错:

点进去后是这样的:

!history.getCurrentLocation ? process.env.NODE_ENV !== 'production' ? (0, _invariant2.default)(false, 'You have provided a history object created with history v2.x or ' + 'earlier. This version of React Router is only compatible with v3 ' + 'history objects. Please upgrade to history v3.x.') : (0, _invariant2.default)(false) : void 0;

到底是什么原因啊