react高阶组件.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <div id="root"></div>
    <div id="root2"></div>
    <script src="./lib/react.development.js"></script>
    <script src="./lib/react-dom.development.js"></script>
    <script src="./lib/babel.min.js"></script>
    <script type="text/babel">
        //高阶组件就是一个函数的参数是一个组件 然后这个函数又返回一个组件  就是高阶组件
        //类的形势
        function FnHOC(MyDemo) {
            return class Mid extends React.Component{
                render(){
                    return(
                        <div>
                            <MyDemo title="class类">
                                <h1>我是class类写的高阶组件</h1>
                            </MyDemo>
                        </div>
                    )
                }
            }
        }
        class Demo extends React.Component{
            render(){
                return(
                    <div>
                        {this.props.title}
                        {this.props.children}
                    </div>
                )
            }
        }
        const  NewFnHOC = FnHOC(Demo);
        ReactDOM.render(
            <NewFnHOC/>,
            document.getElementById("root")
        );
        //函数的形式
        const FnHOCTow = (MyDemoTow)=>()=>(
            <div>
                <MyDemoTow title="函数的形式">
                    <h1>我是函数构成的高阶组件</h1>    
                </MyDemoTow>
            </div>
        )
        const DemoTow = (props)=>(
            <div>
                {props.title}
                {props.children}
            </div>
        )
        const NewFnHOCTow = FnHOCTow(DemoTow);
        ReactDOM.render(
            <NewFnHOCTow/>,
            document.getElementById("root2")
        )


        const You= ()=>(
            <div>helloworld</div>
        );
        ReactDOM.render(
            <You/>,
            document.getElementById("xxx")
        )
    </script>
</body>
</html>