器件参数显示，如没有值则隐藏

components/mobile/brand/ComponentDetail.vue

@@ -1,11 +1,11 @@
 <template>
   <div class="component-detail">
     <div class="base-detail">
-      <div class="base-detail-item">
+      <div class="base-detail-item" v-if="component.kind.nameCn">
         <span>类目：</span>
         <span>{{component.kind.nameCn}}</span>
       </div>
-      <div class="base-detail-item">
+      <div class="base-detail-item" v-if="component.brand.nameCn">
         <span>品牌：</span>
         <span>{{component.brand.nameCn}}</span>
       </div>
@@ -13,7 +13,7 @@
         <span>规格书：</span>
         <img src="/images/mobile/@2x/productDetail/view@2x.png" alt="">
       </div>
-      <div class="base-detail-item">
+      <div class="base-detail-item" v-if="component.description">
         <span class="description">产品描述：{{component.description}}</span>
       </div>
     </div>