Vuex之module使用方法及场景说明

import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
 
const test1 = {
  namespaced: true,
  state: {
    name: 'moduleA',
    type: 'module A'
  },
  mutations: {
    updateNameByMutation(state, appendStr){
      state.name = state.name + " append Str: " + appendStr
    }
  },
  actions: {
    udpateNameByAction({commit}, appendStr) {
      commit("updateNameByMutation", appendStr)
    }
  },
  getters: {
    getNameA(state){
      return state.name
    }
  }
}
const test2 = {
  // 当namespaced=true 时， vuex, 将会自动给各自module 添加访问路径名。 方便区分moduel
  namespaced: true,
  state:{
    name: 'moduleB',
    type: 'module B'
  },
  mutations: {
    updateNameByMutation(state, appendStr){
      state.name = state.name + " append Str: " + appendStr
    }
  },
  actions: {
    // 如果不使用命名空间， 那么view 指向actions 的该方法时，会执行所有与指定action名相同的函数（即：这里module A,B 中该action都会执行）
    udpateNameByAction({commit}, appendStr){
      commit("updateNameByMutation", appendStr)
    }
  },
  getters: {
    getNameB(state){
      return state.name
    }
  }
}
 
const storeInstall =  new Vuex.Store({
   state: {
     name: 'i am root state name'
   },
   modules:{
    // 这里的路径名： test1, test2, 在view 中 通过 mapActions('test1', [actionName]) 使用并区分需要使用的module
    test1,
    test2
   }
})
 
export default storeInstall

<template>
  <div>
    <div>
    <h2>Page Test1</h2>
    </div>
    <div>
    <a href="javascript:" rel="external nofollow"  rel="external nofollow"  @click="changeName">udpate: 名称Name</a>  &nbsp; &nbsp;
    <a href="javascript:" rel="external nofollow"  rel="external nofollow"  @click="showName">显示更新后的Name</a> &nbsp; &nbsp;
    </div>
  </div>
</template>
<script>
import { mapState, mapActions } from 'vuex'
export default {
  data(){
    return {}
  },
  computed: {
    ...mapState('test1', {
      state: state => state
    })
  },
  methods: {
    // test1 模块路径名
    ...mapActions('test1', [
      'udpateNameByAction'
    ]),
    changeName(){
      this["udpateNameByAction"]('ha ha test1 udpate !!')
    },
    showName(){
      console.log(this.$store.state)
    },
  },
  mounted() {
    console.log("store name: ", this.$store)
    console.log("namespace test1 state: ", this.state)
  }
}
</script>