产品详情页若无类目信息增加暂无的提示

components/store/CommodityInfo.vue

@@ -37,7 +37,7 @@
               <span class="name">品&nbsp;牌</span>：<span v-text="commodity.brandNameEn"></span>
             </div>
             <div class="com-info">
-              <span class="name">类&nbsp;目</span>：<span v-text="commodity.kindNameCn"></span>
+              <span class="name">类&nbsp;目</span>：<span v-text="commodity.kindNameCn || '无类目信息'"></span>
             </div>
             <div class="com-info">
               <span class="name">下&nbsp;载</span>：<a @click="toAttach(component.attach)" v-if="component.attach">规格书</a><span v-if="!component.attach">暂无信息</span>