import React, { Component } from 'react'; import '../content.less'; import LeftTab from './leftTab'; import TechDemand from './techDemand'; class Content extends Component { constructor() { super(); this.state = { loading: false, component: 'div' }; } componentWillMount() { if (window.location.hash) { this.getKey(window.location.hash.substr(1)); } else { this.getKey("techDemand"); }; } getKey(key) { switch (key) { case 'techDemand': require.ensure([], () => { const TechDemand = require('./techDemand').default; this.setState({ component: TechDemand }); }); break; }; window.location.hash = key; } render() { return (