import Vue from 'vue'
import Vuex from 'vuex'

Vue.use(Vuex)

export default new Vuex.Store({
 state: {
 showLoading0: true,
 showLoading1: true,
 showLoading2: true,
 showLoading3: true,
 // 頭大不復(fù)制了......
 showLoading9: true,
 },
 // getters 適用于獲取值，不會(huì)改變state原值
 getters: {
 getStore (state) {
  return state
 }
 },
 // 修改state
 mutations: {
 updateLoading (state, showLoading) {
  state.showLoading = showLoading
 }
 },
 actions: {

 }
})

<script>
export default {
 data() {
 return {
  showLoading0: this.$store.getters.getStore.showLoading0,
  showLoading1: this.$store.getters.getStore.showLoading1,
  showLoading2: this.$store.getters.getStore.showLoading2,
  showLoading3: this.$store.getters.getStore.showLoading3,
  // 頭大不復(fù)制了......
  showLoading9: this.$store.getters.getStore.showLoading9
 }
 },
 methods: {
 updateLoading() {
  this.$store.commit('updateLoading', false)
 }
 }
}
</script>

<script>
// 用之前要先引入vuex中的mapXXX方法
import { mapState } from 'vuex'
export default {
 data() {
 return {
  showLoading0: (state) => state.showLoading0
  showLoading1: (state) => state.showLoading1
  showLoading2: (state) => state.showLoading2
  showLoading3: (state) => state.showLoading3
  // 頭大不復(fù)制了......
  showLoading9: (state) => state.showLoading9
 }
 }
}
</script>

// 用之前要先引入vuex中的mapXXX方法
import { mapState } from 'vuex'
export default {
 //data() {
 // return {
 // }
 //}
 // 對(duì)你沒有看錯(cuò)哦，不用data接收了，直接用computed,使用和data里一模一樣哦~
 // <h1 v-if="showLoading0">{{showLoading1}}</h1>
 // console.log(this.showLoading9)
 computed: {
 ...mapState([
  'showLoading0','showLoading1',....,'showLoading9'
 ])
 }
}

// 用之前要先引入vuex中的mapXXX方法
import { mapState } from 'vuex'
export default {
 // 使用 this.getStore()
 computed: {
 ...mapGetters([
  'getStore'
 ])
 },
 // 使用this.updateLoading() 
 // 就相當(dāng)于this.$store.commit('updateLoading')
 methods: {
 ...mapMutations([
   'updateLoading'
  ]),
 }
}

computed:{
  ...mapState({
    save:state => state.save//使用ES6的箭頭函數(shù)來給count賦值
  })
}

computed:

 ...mapState([' save'])
}