react通过父组件渲染子组件中的内容

// less
require ('./static/less/index.less')
// 核心
var React = require('react')
var ReactDom = require('react-dom')
var ReactRouter = require('react-router-dom')
var Router = ReactRouter.BrowserRouter
var Route = ReactRouter.Route
var Link = ReactRouter.Link
var CreateClass = require('create-react-class')
var PropTypes = require('prop-types')
var Ajax = require('dollarphp-ajax')
// 创建组件
var Index = CreateClass({
render:function(){
    return (
        
            

                hello world
            
        
    )
}
})
var Head = CreateClass({
render:function(){
    return (
        

            {this.props.children}
        
    )
}
})
// 渲染
ReactDom.render(
     ,
     document.getElementById('app')
)