/* children 組件 */
function ChidrenComponent(){
    return <div> In this chapter, let's learn about react props ! </div>
}
/* props 接受處理 */
class PropsComponent extends React.Component{
    componentDidMount(){
        console.log(this,'_this')
    }
    render(){
        const {  children , mes , renderName , say ,Component } = this.props
        const renderFunction = children[0]
        const renderComponent = children[1]
        /* 對于子組件，不同的props是怎么被處理 */
        return <div>
            { renderFunction() }
            { mes }
            { renderName() }
            { renderComponent }
            <Component />
            <button onClick={ () => say() } > change content </button>
        </div>
    }
}
/* props 定義綁定 */
class Index extends React.Component{
    state={  
        mes: "hello,React"
    }
    node = null
    say= () =>  this.setState({ mes:'let us learn React!' })
    render(){
        return <div>
            <PropsComponent  
               mes={this.state.mes}  // ① props 作為一個(gè)渲染數(shù)據(jù)源
               say={ this.say  }     // ② props 作為一個(gè)回調(diào)函數(shù) callback
               Component={ ChidrenComponent } // ③ props 作為一個(gè)組件
               renderName={ ()=><div> my name is alien </div> } // ④ props 作為渲染函數(shù)
            >
                { ()=> <div>hello,world</div>  } { /* ⑤render props */ }
                <ChidrenComponent />             { /* ⑥r(nóng)ender component */ }
            </PropsComponent>
        </div>
    }
}

<Container>
    <Children>
</Container>

<Container>
   { (ContainerProps)=> <Children {...ContainerProps}  /> }
</Container>
————————————————————————————————————————————————————————————————————————————————
Container組件：
function  Container(props) {
    const  ContainerProps = {
        name: 'alien',
        mes:'let us learn react'
    }
     return  props.children(ContainerProps)
}

function Son(props){
    console.log(props)
    return <div> hello,world </div>
}
function Father(props){
    const fatherProps={
        mes:'let us learn React !'
    }
    return <Son {...props} { ...fatherProps }  />
}
function Index(){
    const indexProps = {
        name:'alien',
        age:'28',
    }
    return <Father { ...indexProps }  />
}

function Son(props){
    console.log(props)
    return <div> hello,world </div>
}
function Father(props){
    const { age,...fatherProps  } = props
    return <Son  { ...fatherProps }  />
}
function Index(){
    const indexProps = {
        age:'28',
        mes:'let us learn React !'
    }
    return <Father { ...indexProps }  />
}

function Son(props){
    console.log(props)
    return <div> hello,world </div>
}
function Father(props){
    const fatherProps={
        mes:'let us learn React !'
    }
    return <Son {...props} { ...fatherProps }  />
}
function Index(){
    const indexProps = {
        name:'alien',
        age:'28',
    }
    return <Father { ...indexProps }  />
}

function Son(props){
     console.log(props) // {name: "alien", age: "28", mes: "let us learn React !"}
     return <div> hello,world </div>
}
function Father(prop){
    return React.cloneElement(prop.children,{  mes:'let us learn React !' })
}
function Index(){
    return <Father>
        <Son  name="alien"  age="28"  />
    </Father>
}