侧边菜单

src/App.vue

 <template>
   <div>
     <v-header :userName="userName" :authList="authList"></v-header>
-    <v-slidebar v-if="showSlidebar" :tokenValue="token" :systemType="systemType"></v-slidebar>
+    <v-slidebar v-show="showSlidebar" :tokenValue="token" :systemType="systemType"></v-slidebar>
     <el-container>
       <div class="content" id="body-content">
         <transition name="router-fade" mode="out-in">