限制最后一个标签框不能被删除

src/view/memberGroup/tags-group-list.vue

@@ -8,6 +8,7 @@
       :tagsGroupIndex="index"
       :tagsRelation="tagsGroupRelation[index]"
       :showAddMenu="showAddMenu"
+      :show-del-menu="selectedTagsData.length > 1"
       :active="activeTagsGroupIndex === index"
       @addTags="addTags"
       @delTags="delTags"

src/view/memberGroup/tags-group.vue

@@ -2,7 +2,7 @@
   <div class="w-427 border-box">
     <div :class="['tags-group', { 'tags-group--active': active }]" @click="checkTagsGroup">
       <!--右上角的下拉菜单-->
-      <el-dropdown class="tags-group__dropdown" placement="bottom-end">
+      <el-dropdown class="tags-group__dropdown" placement="bottom-end" v-if="showAddMenu || showDelMenu">
         <el-popover width="200" placement="top" v-model="showDelPop" trigger="manual">
           <p class="m-b-20">确认删除输入框及内部所有标签？</p>
           <div class="text-right">
@@ -13,7 +13,7 @@
         </el-popover>
         <el-dropdown-menu slot="dropdown">
           <el-dropdown-item v-if="showAddMenu" @click.native="addTags">添加标签</el-dropdown-item>
-          <el-dropdown-item @click.native="showDelPop = true">删除</el-dropdown-item>
+          <el-dropdown-item v-if="showDelMenu" @click.native="showDelPop = true">删除</el-dropdown-item>
         </el-dropdown-menu>
       </el-dropdown>
       <!--展示选中的标签-->
@@ -75,6 +75,8 @@ export default {
     tagsGroupIndex: Number,
     // 下拉菜单是否显示"添加标签"菜单项
     showAddMenu: Boolean,
+    // 下拉菜单是否显示"删除"菜单项
+    showDelMenu: Boolean,
     // 标签组是否选中
     active: Boolean
   },