vue组件通信传值操作示例

<template> <div>  <h3 @click="alerrt"> 我是子组件一</h3>  <span>{{parentMessage}}</span> </div></template><script> export default{  props: ['parentMessage'],  mounted() {   // this.$emit('childEvent');  },  methods:{   alerrt(){    this.$emit('childEvent',{name:'zhangsan',age:10 });   }  } }</script><style scoped></style>

<template> <div>  <h2>父组件</h2>  <span>父组件传递消息给子组件</span>  <br>  <router-view @childEvent="parentMethod" :parentMessage="parentMessage" />  <!-- <Child-one :parentMessage="parentMessage"></Child-one> -->  <button type="" @click='extendTest'>extend</button>  <div id="extend"></div> </div></template><script> import ChildOne from './ChildOne' export default{  components: {   ChildOne  },  methods: {   parentMethod({name,age}) {    alert(this.parentMessage);    console.log(this.parentMessage,name,age);   },   extendTest() {    console.log('333');    var Extend = Vue.extend({     template: '<p>{{firstName}} {{lastName}} aka {{alias}}</p>',     data: function () {      return {       firstName: 'Walter',       lastName: 'White',       alias: 'Heisenberg'      }     }    })    new Extend().$mount('#extend')   },  },  data () {   return {    parentMessage: '我是来自父组件的消息aaaa'   }  } }</script><style scoped></style>

import Vue from 'vue'window.eventBus = new Vue();

window.eventBus.$emit('函数名称', {参数 键：值});

window.eventBus.$on('grouprecording',参数 =>{//处理数据})