一、在store文件中新建csjVar.js文件

const csjVar = {
  csjMess: [{aaa:"ok"},{bbb:"no"}]
}
export default csjVar

二、修改store文件中新建index.js文件

import Vue from 'vue'
import Vuex from 'vuex'
import user from '@/store/modules/user'
import getters from './getters'
import csjVar from './csjVar.js'

Vue.use(Vuex)

const store = new Vuex.Store({
	modules: {
		user
	},
	state: {
		// 添加 csjVar 到 Vuex 的 state
		csjVar
	},
	mutations: {
		// 创建一个 mutation 来改变 csjMess 的值
		SET_CSJMESS(state, value) {
			state.csjVar.csjMess = value
		}
	},
	getters,
})

export default store

三、index.vue中读取和修改

<script>

	import store from '@/store'

	export default {
		data() {
			return {
				webUrl: '',
			}
		},
		methods: {

			onLoad: function(query) {

				console.log("全局变量：csj");
				var sss = this.$store.state.csjVar.csjMess;
				console.log(this.$store.state.csjVar.csjMess);
				console.log(this.$store.state.csjVar.csjMess[0].aaa);
				console.log(this.$store.state.csjVar.csjMess[1].bbb);
				
				// 遍历sss,修改每个元素的aaa和bbb属性值  	
				
				sss.forEach(item => {
					if (item.aaa) {
						item.aaa = 'Changed ' + item.aaa   // 修改aaa的值
					}
					if (item.bbb) {
						item.bbb = 'Changed ' + item.bbb  // 修改bbb的值
					}
				})
				
				 // 提交mutation来修改csjMess	
				 this.$store.commit('SET_CSJMESS', sss)
				
				console.log(this.$store.state.csjVar.csjMess[0].aaa);
				console.log(this.$store.state.csjVar.csjMess[1].bbb);

			},

		}
	}
</script>