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vuex 按需动态引入等常用写法

1、store目录下添加Chat.js

const Chat = {
state: {
path: "222222",
token: "",
subject: ""
},

mutations: {
SET_TOKEN: (state,data) => {
state.token = data;
}
},

actions: {
/**
* this.$store.dispatch('setToken');
*/
setToken({ commit, state }, data) {
console.log(11111111111111)
commit('SET_TOKEN',data);
},
}
}

export default Chat

2、动态引入组件,并且在引入组件前先动态加载vuex模块

(1)组件写法

<el-dialog
:visible.sync="$store.state.chatMessageShowState"
:append-to-body="true"
:close-on-click-modal="false"
@close="showBtn(false)"
class="el-dialog-chat-unit"
>
<component :is="ChatMessage"></component>
</el-dialog>

(2)动态引入写法

// val 是否显示弹窗
      showBtn(val){
        if(!this.ChatMessage){
let options = {
lock: true,
text: '正在加载中...',
spinner: 'el-icon-loading',
background: 'rgba(0, 0, 0, 0.8)',
customClass: 'z-index-9999'
}
let loading = this.$loading(options)

// 动态注入模块
this.$store.registerModule("chat", require("./store/chat").default);
          // 动态引入组件
          this.ChatMessage = () => import('@/views/admin/chatMsg');
let timesIndex = 0;
timesIndex = setInterval(()=>{
if($(".ChatMessage").length) {
clearInterval(timesIndex)
loading.close();
}
},200)
}
this.$store.state.chatMessageShowState = val;
if(val) {
$("body").addClass("overflow-h");
}else {
$("body").removeClass("overflow-h");
}
      }

3、页面中vuex的使用:

(1) 简单写法

console.log( this.$store.state.chat )
this.$store.dispatch('setToken');

(2)mapState的写法1

import { mapState } from "vuex";

computed: mapState({
path: (state) => state.chat.path,
}),

console.log(this.path)

(3)mapState的写法2

import { mapState } from "vuex";
computed: {
...mapState({
socket: (state) => state.chatSocket.socket,
}),
// 是否显示断网提示语
showTips() {
return !this.networkStatus || this.websocketState!=1; // 断网 || 离线状态
},
},

 4、全局引入的vuex写法,其中单模块写法同1步骤

(1)store下添加index.js引入全局需要的vuex模块

import Vue from 'vue'
import Vuex from 'vuex'
import cached from './modules/cached'
import keycloak from './modules/keycloak'
import user from './modules/user'
import getters from './getters'

Vue.use(Vuex)

const store = new Vuex.Store({
modules: {
cached,
keycloak,
user
},
getters
})

export default store

(2)getter的写法

// 全局的用法 this.$store.getters.cachedViews
const getters = {
cachedViews: state => state.cached.cachedViews,
userInfor: state => state.user.userInfor,
networkStatus: state => state.user.networkStatus
}
export default getters

(3)main.js里引入

import store from './store'

window.vm = new Vue({
el: '#app',
router,
store,
render: h => h(App),
config: {
productionTip: false
},
created() {
// 加载完页面就初始化
store.dispatch('setInit');
}
})

5、vuex模块中常用写法

(1)举例store下的user.js和chat.js, 其中chat.js中使用user.js的userId

import user from '@/store/user';

actions: {
exitCurChat({dispatch, commit, state}) {
console.log( user.state.userInfo.id ); // user模块下的state
console.log( state.chatId ); // 当前模块下的state
commit('EXITCURCHAT'); // 当前模块下的mutations
dispatch('clearSendingInterval'); // 全部模块下的actions,所以注意不要同名
}
}

(2)Vue.set写法

import Vue from 'vue'
Vue.set(state.current, 'isFocus', false);

(3)router写法

import router from '@/router'
router.push("/consult/list");

(4)new Promise写法

(4.1)/api/group.js文件

import request from '@/utils/request'  // axios拦截器

export function getGroupNoticeApi(groupId) {
return request({
url: GATEWAY_URL + '/group/notice/' + groupId,
method: 'get'
})
}

(4.2)vuex写法

import { getGroupNoticeApi } from '@/api/group'

actions: {
// 请求数据
getGroupNotice({ commit, state }, datas) {
let { groupId, isRead } = datas;
return new Promise((resolve, reject) => {
getGroupNoticeApi( groupId ).then(res => {
commit('SETGROUPNOTICEDATA',data);
      resolve(res)
     }).catch(error => {
      reject(error)
     })
    })
  }
}
dispatch("getGroupNotice",{
  groupId: groupId,
  isRead: false
});

 

前端菜鸟一枚,习惯记录平时遇到的一些问题和学习笔记

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