Vuex模块化和命名空间namespaced实例演示

const countAbout = {  namespaced:true,//开启命名空间  state:{x:1},  mutations: { ... },  actions: { ... },  getters: {    bigSum(state){       return state.sum * 10    }  }}const personAbout = {  namespaced:true,//开启命名空间  state:{ ... },  mutations: { ... },  actions: { ... }}const store = new Vuex.Store({  modules: {    countAbout,    personAbout  }})

//方式一：自己直接读取this.$store.state.personAbout.list//方式二：借助mapState读取：...mapState('countAbout',['sum','school','subject']),

//方式一：自己直接读取this.$store.getters['personAbout/firstPersonName']//方式二：借助mapGetters读取：...mapGetters('countAbout',['bigSum'])

//方式一：自己直接dispatchthis.$store.dispatch('personAbout/addPersonWang',person)//方式二：借助mapActions：...mapActions('countAbout',{incrementOdd:'jiaOdd',incrementWait:'jiaWait'})

//方式一：自己直接committhis.$store.commit('personAbout/ADD_PERSON',person)//方式二：借助mapMutations：...mapMutations('countAbout',{increment:'JIA',decrement:'JIAN'}),

//引入Vueimport Vue from 'vue'//引入Appimport App from './App.vue'//引入storeimport store from './store'//关闭Vue的生产提示Vue.config.productionTip = false//创建vmnew Vue({	el:'#app',	render: h => h(App),	store,	beforeCreate() {		Vue.prototype.$bus = this	}})

<template>	<div>		<Count/>		<hr>		<Person/>	</div></template><script>	import Count from './components/Count'	import Person from './components/Person'	export default {		name:'App',		components:{Count,Person},	}</script>

//该文件用于创建Vuex中最为核心的storeimport Vue from 'vue'//引入Vueximport Vuex from 'vuex'import countOptions from './count'import personOptions from './person'//应用Vuex插件Vue.use(Vuex)//创建并暴露storeexport default new Vuex.Store({	modules:{		countAbout:countOptions,		personAbout:personOptions	}})

//求和相关的配置export default {	namespaced:true,	actions:{		jiaOdd(context,value){			console.log('actions中的jiaOdd被调用了')			if(context.state.sum % 2){				context.commit('JIA',value)			}		},		jiaWait(context,value){			console.log('actions中的jiaWait被调用了')			setTimeout(()=>{				context.commit('JIA',value)			},500)		}	},	mutations:{		JIA(state,value){			console.log('mutations中的JIA被调用了')			state.sum += value		},		JIAN(state,value){			console.log('mutations中的JIAN被调用了')			state.sum -= value		},	},	state:{		sum:0, //当前的和		school:'尚硅谷',		subject:'前端',	},	getters:{		bigSum(state){			return state.sum*10		}	},}

//人员管理相关的配置import axios from 'axios'import { nanoid } from 'nanoid'export default {	namespaced:true,	actions:{		addPersonWang(context,value){			if(value.name.indexOf('王') === 0){				context.commit('ADD_PERSON',value)			}else{				alert('添加的人必须姓王！')			}		},		addPersonServer(context){			axios.get('https://api.uixsj.cn/hitokoto/get?type=social').then(				response => {					context.commit('ADD_PERSON',{id:nanoid(),name:response.data})				},				error => {					alert(error.message)				}			)		}	},	mutations:{		ADD_PERSON(state,value){			console.log('mutations中的ADD_PERSON被调用了')			state.personList.unshift(value)		}	},	state:{		personList:[			{id:'001',name:'张三'}		]	},	getters:{		firstPersonName(state){			return state.personList[0].name		}	},}

<template>	<div>		<h1>当前求和为：{{sum}}</h1>		<h3>当前求和放大10倍为：{{bigSum}}</h3>		<h3>我在{{school}}，学习{{subject}}</h3>		<h3 style="color:red">Person组件的总人数是：{{personList.length}}</h3>		<select v-model.number="n">			<option value="1">1</option>			<option value="2">2</option>			<option value="3">3</option>		</select>		<button @click="increment(n)">+</button>		<button @click="decrement(n)">-</button>		<button @click="incrementOdd(n)">当前求和为奇数再加</button>		<button @click="incrementWait(n)">等一等再加</button>	</div></template><script>	import {mapState,mapGetters,mapMutations,mapActions} from 'vuex'	export default {		name:'Count',		data() {			return {				n:1, //用户选择的数字			}		},		computed:{			//借助mapState生成计算属性，从state中读取数据。（数组写法）			...mapState('countAbout',['sum','school','subject']),			...mapState('personAbout',['personList']),			//借助mapGetters生成计算属性，从getters中读取数据。（数组写法）			...mapGetters('countAbout',['bigSum'])		},		methods: {			//借助mapMutations生成对应的方法，方法中会调用commit去联系mutations(对象写法)			...mapMutations('countAbout',{increment:'JIA',decrement:'JIAN'}),			//借助mapActions生成对应的方法，方法中会调用dispatch去联系actions(对象写法)			...mapActions('countAbout',{incrementOdd:'jiaOdd',incrementWait:'jiaWait'})		},		mounted() {			console.log(this.$store)		},	}</script><style lang="css">	button{		margin-left: 5px;	}</style>

<template>	<div>		<h1>人员列表</h1>		<h3 style="color:red">Count组件求和为：{{sum}}</h3>		<h3>列表中第一个人的名字是：{{firstPersonName}}</h3>		<input type="text" placeholder="请输入名字" v-model="name">		<button @click="add">添加</button>		<button @click="addWang">添加一个姓王的人</button>		<button @click="addPersonServer">添加一个人，名字随机</button>		<ul>			<li v-for="p in personList" :key="p.id">{{p.name}}</li>		</ul>	</div></template><script>	import {nanoid} from 'nanoid'	export default {		name:'Person',		data() {			return {				name:''			}		},		computed:{			personList(){				return this.$store.state.personAbout.personList			},			sum(){				return this.$store.state.countAbout.sum			},			firstPersonName(){				return this.$store.getters['personAbout/firstPersonName']			}		},		methods: {			add(){				const personObj = {id:nanoid(),name:this.name}				this.$store.commit('personAbout/ADD_PERSON',personObj)				this.name = ''			},			addWang(){				const personObj = {id:nanoid(),name:this.name}				this.$store.dispatch('personAbout/addPersonWang',personObj)				this.name = ''			},			addPersonServer(){				this.$store.dispatch('personAbout/addPersonServer')			}		},	}</script>