子传父vue/react

vue子传父：很多都是结合defineEmit来实现的，这里通过给子组件传递函数，子组件调用传递下来的函数实现传值。

父亲：

  
    father
    Welcome to Your Vue.js App
  


import Demo from './Demo.vue'
  const clickFather = (e) => {
    console.log(e)
  }

儿子：

  childStart {{ msg }} childEnd


import { ref, defineProps } from "vue";
const count = ref(0);
const props = defineProps({
  msg: String,
  clickChild: Function,
});
const clickToFather = () => {
  console.log("props", props);
  console.log("clickToFather", props.msg);
  props.clickChild && props.clickChild("22222");
};

react；同样的react也可以通过调用传递下来的函数的方式实现子传父

父：

import React, { useState } from 'react';
import ChildComponent from './Bpp';
 
const ParentComponent = () => {
  const handleDataFromChild = (data) => {
    console.log(data);
  }
 
  return (
    
      66666666
      
    
  );
}
 
export default ParentComponent;

子：

import React from "react";
const ChildComponent = (props) => {
  console.log(props);
  const sendDataToParent = () => {
    props.onDataFromChild('000');
  };
  return (
    
      Send Data to Parent
    
  );
};
export default ChildComponent;