content: /**
   * @author chenjiancai
   * @time 2017-07-18
   */
  import './index.less';
  
  import ReactDom from 'react-dom';
  import React from 'react';
  
  class HelloWorld extends React.Component{
      render (){
          return <h1>hello world ,i'm react components</h1>
      }
  }
  
  ReactDom.render(<div>
      <HelloWorld></HelloWorld>
  </div>,document.getElementById('app'));