improve: 体验优化

template/admin/src/components/main/components/side-menu/side-menu.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="side-menu-wrapper">
     <!-- <sider-trigger :collapsed="collapsed" @on-change="handleCollpasedChange"></sider-trigger> -->
-    <div class="side-menu-box" v-show="!collapsed">
+    <div class="side-menu-box" v-if="!collapsed">
       <div class="parent-menu">
         <slot></slot>
         <Menu
@@ -23,7 +23,7 @@
           </template>
         </Menu>
       </div>
-      <div class="child-menu" v-show="sider.length">
+      <div class="child-menu"  v-if="sider.length">
         <div class="cat-name">{{ oneMenuName }}</div>
         <Menu
           ref="childMenu"
@@ -63,7 +63,7 @@
       </div>
     </div>
 
-    <div class="menu-collapsed" v-show="collapsed">
+    <div class="menu-collapsed" v-if="collapsed">
       <slot></slot>
       <template v-for="item in menusName">
         <collapsed-menu
@@ -353,6 +353,8 @@ export default {
   .child-menu {
     z-index: 9;
     box-shadow: 2px 0px 4px 0px rgba(0, 0, 0, 0.06);
+    transition: width .2s ease .2s;
+    overflow: hidden;
     .child-menus {
       width: @side-child-width !important;
     }