VUE注册全局缓存

1.新建js文件

const xxx= {
  namespaced: true,
  state: {
    formData: {
     　　//此处储存数据
    }
  },
  getters: {

  },
  mutations: {
    CHANGE_FORMDATA: (state, value) => {
      state.formData = value
    }
  },
  actions: {
　　//将传入数据进行全局缓存
    changeFormData({ commit }, value) {
      commit('CHANGE_FORMDATA', value)
    },
　　// 重置表单
    resetFormData({ commit, state }, value) {
      const obj = Object.assign({}, state.formData)
      for (const key in obj) {
        obj[key] = undefined
      }
      commit('CHANGE_FORMDATA', obj)
    }
  }
}
export default xxx

2.将第一步的js在modules.js 进行全局注册

import product from '@/xxx/xxx'

const modules = {
  xxx
}
export default modules

3.在需要的页面调用

import { mapState } from 'vuex'

computed: {
    ...mapState({
      storeFormData: state => state.xxx.formData
    })
  },

this.$store.dispatch('xxx/changeFormData', this.formData) 

this.$store.dispatch('xxx/resetFormData')