content: import React, { Component } from 'react';
  import './App.css';
  import HelloReact from './components/HelloReact.js'
  import HelloReactToDoList from './components/ToDoList.js'
  
  class App extends Component{
    render(){
      return(
      <div>
        <h1>HelloReact 入门程序：</h1>
          <HelloReact name="yao" id="test" num={1} />
        <h1>React 做个ToDoList：</h1>
          <HelloReactToDoList things={[
          {
            task: "one",
            done: true
          },
          {
            task: "two",
            done: false
          },
          {
            task: "three",
            done: false
          }
        ]} />
      </div>
          )
    }
  }
  
  export default App;