1.安装Vuex
npm install vuex –save
2. 新建store目录结构
3. 编辑store.js
import Vuex from 'vuex'
import Vue from 'vue'
import defaultState from './state/state'
import mutations from './mutations/mutations'
import getters from './getters/getters'
import actions from './actions/actions'
Vue.use(Vuex)
// 开发环境
