import React from 'react';
import { Router, Route, Link, hashHistory } from 'react-router';

// const Home = () => <div><h1>Home</h1><Links /></div>;

class Home extends React.Component {
  componentWillMount(){
    this.context.router.setRouteLeaveHook(
      this.props.route,
      this.routerWillLeave
    )
  }

  routerWillLeave( nextLocation ){
    return `leaving home for ${nextLocation.pathname}`
  }

  render(){
    return <div><h1>Home</h1><Links /></div>;
  }
}

Home.contextTypes = { router: React.PropTypes.object.isRequired }

const About = () => <div><h1>About</h1><Links /></div>;
const Links = () => {
  return (
    <nav>
      <Link to="/">Home</Link>
      <Link to="about">About</Link>
    </nav>
  )
};

const App = () => {
  return (
    <Router history={ hashHistory }>
      <Route path="/" component={Home}></Route>
      <Route path="/about" component={About}></Route>
    </Router>
  )
};

export default App;

10.routerWillLeave

Other