在開發組件的時候，一定會遇到組件的通信，比如點擊一個圖標出現彈窗和蒙層，這三個分別是不同的組件。管理他們之間的狀態就成了問題。
props雙向綁定
通過 sync 雙向綁定，屬性變化會同步到所有組件，這也是最簡單的實現方式，缺點是屬性會比較多。實現方式如下
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()">點擊出現彈窗</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>自定義事件
子組件 $dispatch() 派發事件傳遞給父組件，父組件 $broadcast() 廣播事件傳遞給子組件，這種方式雖然減少了props的使用，但是需要額外定義幾個事件，狀態多了就會變得很復雜，實現方法如下
App.vue 文件
<template> <div id="app"> <mask></mask> <dialog></dialog> <dialog-icon></dialog-icon></template><script>import mask from './components/mask/index'import dialog from './components/dialog/index'import dialogIcon from './components/dialog-icon/index'export default { components: { mask, dialog, dialogIcon }, data () { return { hideMask: true, hideDialog: true } }, events: { 'dialog-dispatch' () { this.hidedialog = !this.hidedialog this.$broadcast('dialog-broadcast') }, 'mask-dispatch' () { this.hideMask = !this.hideMask this.$broadcast('mask-broadcast') } }}</script>component/dialog-icon/index.vue 文件
<template> <section class="dialog-icon" @click="show()">點擊出現彈窗</section></template><script>export default { methods: { show () { this.$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
狀態統一放store管理，修改狀態通過mutations，組件通過action調用mutations，雖然有點繞，但是所有東西放一起后期會更好維護，實現方法如下
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()">點擊出現彈窗</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 storevuex/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內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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