父子组件通信:
子组件
<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>
父组件
<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></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().$mount('#extend') }, }, data () { return { parentMessage: '我是来自父组件的消息aaaa' } } } </script> <style scoped> </style>
兄弟组件通信:
在main,js里加
import Vue from 'vue' window.eventBus = new Vue();
在组件里
兄弟1组件:
window.eventBus.$emit('函数名称', {参数 键:值});
兄弟2组件:
window.eventBus.$on('grouprecording',参数 =>{ //处理数据 })