1 import Vue from 'vue';
 2 import Vuex from 'vuex';
 3 import user from './store/user.js'
 4 Vue.use(Vuex);
 5
 7 export default new Vuex.Store({
 8     modules: {
 9       user
10     },
11     state: {
12         excludeXjlistpage:""
13     },
14     mutations: {
15         changeExclude(state,data){
16             state.excludePage= data ;//data就是需要清除緩存的頁面的name
17   } 
18  }, 
19 });

<template>
        <div>
            <keep-alive :exclude="this.$store.state.excludePage">
                <router-view v-if="$route.meta.keepAlive" ></router-view>
            </keep-alive>
            <router-view v-if="!$route.meta.keepAlive"></router-view>
        </div>
</template>

 1 beforeRouteEnter(to, from, next) {
 2     next((vm) => {
 3       if(from.name == "A頁面name"){
 4         vm.$store.commit('changeExclude','')//changeExclude是事件,''是傳進(jìn)去的參數(shù),store.js中的data
 5       }
 6     });
 7   },
 8   beforeRouteLeave(to, from, next) {
 9     if (to.name == "A頁面name") {
10       this.$store.commit('changeExclude','B頁面的name')
11     }
12     next();
13   },