react高阶组件添加和删除props

import React from "react"

function removeUserProp(WrappedComponent) {
  return function newRender(props) {
    const {user, ...otherProps} = props;// 删除user这个属性值
    return <WrappedComponent {...otherProps} />
  }
}

export default removeUserProp

 const RemoveComponent = removeUserProp(reactComponentClass)({user: "aa"});// 这里返回的是一个react component
 render () {
  return <div>
        {RemoveComponent}
      </div>
 }

import React from "react"

const addNewProps = function (WrappedComponent, newProps) {// 接收的是一个class作为参数，返回一个class
  return class WrappingComponent extends React.Component {
    render () {
      return <WrappedComponent {...this.props} {...newProps}/>
    } 
  }
}

export default addNewProps

  const AddUserComponent = addNewProps(SampleComponent, {user: "aa"})
  render () {
    return <AddUserComponent />
  }

import React from "react"
import addNewProps from './addNewProps'
import removeUserProp from './removeUserProp'

class SampleComponent extends React.Component {

  constructor(props) {
    console.log(props)
    super(props)
  }

  render () {
    console.log(this.props)
    return <div>
        {
         this.props.user ? <p>哈哈哈</p> : <p>哈哈哈2</p>
        }   
        </div>
  }
}


class Test extends React.Component {

  render () {
    var obj = {aa: "aa"}
    const AddUserComponent = addNewProps(SampleComponent, {user: "aa"})
    const RemoveUserComponent = removeUserProp(SampleComponent)({user: "aa"})
   
    return <div>
         <AddUserComponent />
         {RemoveUserComponent}
        </div>
    
  }
}

export default Test