在开发组件的时候，一定会遇到组件的通信，比如点击一个图标出现弹窗和蒙层，这三个分别是不同的组件。管理他们之间的状态就成了问题。

props双向绑定

通过 sync 双向绑定，属性变化会同步到所有组件，这也是最简单的实现方式，缺点是属性会比较多。实现方式如下

App.vue 文件

<template> <div id="app"> <mask :hide-mask.sync="hideMask"></mask> <dialog :hide-dialog.sync="hideDialog" :hide-mask.sync="hideMask"></dialog> <dialog-icon :hide-dialog.sync="hideDialog" :hide-mask.sync="hideMask"></dialog-icon> </div></template><script>import mask from './components/mask/index'import dialog from './components/dialog/index'import dialogIcon from './components/dialog-icon/index'export default { components: { mask, dialog, dialogIcon }, data () { return { hideMask: true, hideDialog: true } }}</script>

component/dialog/index.vue 文件

<template> <section class="dialog" :class="{ 'hide': hideDialog }"> <div class="dialog-close" @click="hide()"></div> </section></template><script>export default { props: ['hideDialog', 'hideMask'], methods: { hide () { this.hideDialog = !this.hideDialog this.hideMask = !this.hideMask } }}</script>

component/dialog-icon/index.vue 文件

<template> <section class="dialog-icon" @click="show()">点击出现弹窗</section></template><script>export default { props: ['hideDialog', 'hideMask'], methods: { show () { this.hideDialog = !this.hideDialog this.hideMask = !this.hideMask } }}</script>

component/mask/index.vue 文件

<template> <div class="mask" :class="{ 'hide': hideMask }"></div></template><script>export default { props: ['hideMask']}</script>

自定义事件

子组件 $dispatch() 派发事件传递给父组件，父组件 $broadcast() 广播事件传递给子组件，这种方式虽然减少了props的使用，但是需要额外定义几个事件，状态多了就会变得很复杂，实现方法如下

App.vue 文件

<template> <div id="app"> <mask></mask> <dialog></dialog> <dialog-icon></dialog-icon></template><script>import mask from './components/mask/index'import dialog from './components/dialog/index'import dialogIcon from './components/dialog-icon/index'export default { components: { mask, dialog, dialogIcon }, data () { return { hideMask: true, hideDialog: true } }, events: { 'dialog-dispatch' () { this.hidedialog = !this.hidedialog this.$broadcast('dialog-broadcast') }, 'mask-dispatch' () { this.hideMask = !this.hideMask this.$broadcast('mask-broadcast') } }}</script>

component/dialog-icon/index.vue 文件

<template> <section class="dialog-icon" @click="show()">点击出现弹窗</section></template><script>export default { methods: { show () { this.$dispatch('dialog-dispatch') this.$dispatch('mask-dispatch') } }, events: { 'dialog-broadcast' () { this.hideDialog = !this.hideDialog } }, data () { return { hideDialog: this.$parent.hideDialog, hideMask: this.$parent.hideMask } }}</script>

component/dialog/index.vue 文件

<template> <section class="dialog" :class="{ 'hide': hideDialog }"> <div class="dialog-close" @click="hide()"></div> </section></template><script>export default { methods: { hide () { this.$dispatch('dialog-dispatch') this.$dispatch('mask-dispatch') } }, events: { 'dialog-broadcast' () { this.hideDialog = !this.hideDialog } }, data () { return { hideDialog: this.$parent.hideDialog, hideMask: this.$parent.hideMask } }}</script>

component/mask/index.vue 文件

<template> <div class="mask" :class="{ 'hide': hideMask }"></div></template><script>export default { data () { return { hideMask: this.$parent.hideMask } }, events: { 'mask-broadcast' () { this.hideMask = !this.hideMask } }}</script>

Vuex

状态统一放store管理，修改状态通过mutations，组件通过action调用mutations，虽然有点绕，但是所有东西放一起后期会更好维护，实现方法如下

App.vue 文件

<template> <div id="app"> <mask></mask> <dialog></dialog> <dialog-icon></dialog-icon> </div></template><script>import mask from './components/mask/index'import dialog from './components/dialog/index'import dialogIcon from './components/dialog-icon/index'export default { components: { mask, dialog, dialogIcon }}</script>

component/dialog/index.vue 文件

<template> <section class="storehouse dialog" :class="{ 'hide': isHideDialog }"> <div class="dialog-close" @click="hideDialog()"></div> </section></template><script>import { hideDialog } from '../../vuex/actions'export default { vuex: { state: { isHideDialog: state => state.isHideDialog }, actions: { hideDialog } }}</script>

component/dialog-icon/index.vue 文件

<template> <section class="storehouse-icon" @click="hideDialog()">点击出现弹窗</section></template><script>import { hideDialog } from '../../vuex/actions'export default { vuex: { actions: { hideDialog } }}</script>

component/mask/index.vue 文件

<template> <div class="mask" :class="{ 'hide': isHideMask }"></div></template><script>export default { vuex: { state: { isHideMask: state => state.isHideMask } }}</script>

vuex/store.js 文件

import Vue from 'vue'import Vuex from 'vuex'import mutations from './mutations'Vue.use(Vuex)const state = { isHideMask: true, isHideDialog: true}const store = new Vuex.Store({ state, mutations})if (module.hot) { module.hot.accept(['./mutations'], () => { const mutations = require('./mutations').default store.hotUpdate({ mutations }) })}export default store

vuex/mutations.js 文件

import { HIDEDIALOG}from './mutation-types'exportdefault { [HIDEDIALOG] (state) { state.isHideDialog = !state.isHideDialog state.isHideMask = !state.isHideMask }}

vuex/mutations-types.js 文件

export const HIDEDIALOG = 'HIDEDIALOG'

vuex/action.js 文件

import { HIDEDIALOG } from './mutation-types'export const hideDialog = ({ dispatch }) => dispatch(HIDEDIALOG)

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。