什么是高阶组件

import React from "react";

function Home() {
  return (
    
Home
  )
}
function enhanceComponent(WrappedComponent) {
  class AdvComponent extends React.PureComponent{
    render() {
      return (
        

          
        
      );
    }
  }
  return AdvComponent
}
const AdvComponent = enhanceComponent(Home);
class App extends React.PureComponent {
  render() {
    return (
      

        
App
        
      
    );
  }
}
export default App;

• 高阶组件是参数为组件，返回值为新组件的函数