实现React单页应用的方法详解

// main.js
import React from 'react'
import { render } from 'react-dom'
import MyComponent from './component.js'
import './main.css'


// 主组件
class MyDemo extends React.Component {
  render() {
    return (
      <div className="box">
        <MyComponent />
      </div>
    )
  }
}

render((
  <MyDemo />
), document.getElementById('app'))


// component.js

// 子组件
import React from 'react'

export default class MyComponent extends React.Component {
  render() {
    return (
      <div>
        <p>这是一个组件！</p>
      </div>
    )
  }
}


// main.css
.box {
  width: 100%
}

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

const ACTIVE = { color: 'red' }

class App extends Component {
  render() {
    return (
      <div>
        <h1>我的路由</h1>
        <ul>
          <li><Link to="/" activeStyle={ACTIVE}>首页</Link></li>
          <li><Link to="/users" activeStyle={ACTIVE}>用户页</Link></li>
        </ul>
        {this.props.children}
      </div>
    )
  }
}

class Index extends React.Component {
  render() {
    return (
      <div>
        <h2>Index!</h2>
      </div>
    )
  }
}

class Users extends React.Component {
  render() {
    return (
      <div>
        <h2>Users</h2>
      </div>
    )
  }
}

render((
  <Router history={browserHistory}>
    <Route path="/" component={App}>
      <IndexRoute component={Index}/>
      <Route path="users" component={Users}></Route>
    </Route>
  </Router>
), document.getElementById('app'))

// 获取数据方法
  fetchFn = () => {
    fetch('../../data.json')
      .then((res) => { console.log(res.status);return res.json() })
      .then((data) => { this.setState({lists:data.listData}) })
      .catch((e) => { console.log(e.message) })
  }