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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 store
vuex/mutations.js 文件
import {
HIDEDIALOG
}
from './mutation-types'
export
default {
[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億速云。
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