vue状态管理，配置vuex

Vue项目中经常会有对状态的控制操作，那么如何合理的封装使用呢？

main.js 引入store

//main.js
import store from ‘./store‘;

const app =  new Vue({
  router,
  store,
  ...
})

创建store文件夹，新建index、rootState、getters、actions、mutations文件

├── src
│   ├── main.js
│   └── store
│         |——index.js
│         |——rootState.js
│         |——getters.js
│         |——actions.js
│         |——mutations.js
|——index.html

index.js文件

 // 文件都会汇聚到这个地方来,也是创建store对象的地方,就像store的入口一样
 //index.js

 import Vue from ‘vue‘;
 import Vuex from ‘vuex‘;
 import * as actions from ‘./actions‘;
 import * as mutations from ‘./mutations‘;
 import * as getters from ‘./getters‘;
 import state from ‘./rootState‘;
 Vue.use(Vuex)
 const store = new Vuex.Store({
   state,
   getters,
   actions,
   mutations
 })
 export default store;

rootState.js文件

//rootState.js

const state = {
  userName   	: ‘‘
}
export default state;

getters.js文件

//getters.js

export const userName      = state => state.userName;

mutations.js文件

//mutations.js

export const setUserName = (state, payload) => {
  state.userName = payload.userName;
}

actions.js文件

//actions.js

export const setUserName = ({commit},userName) => {
  commit({
    type: ‘setUserName‘,
    userName
  });
};

使用 vuex，引入示例：

<template>
  <section class="wrap">
	引用vuex--userName的值为：{{userName}}
  </section>
</template>

<script>
import {mapGetters} from ‘vuex‘
export default {
  data () {
    return {
    }
  },
  computed:{
		...mapGetters([‘userName‘])
   }
}
</script>

原文地址：https://www.cnblogs.com/sunbaoxu/p/12620962.html