Fix(商品详情):[#2297]无效的规格，仍然可以点击，并且未显示价格，库存显示undefined

components/ProductWindow.vue

@@ -42,10 +42,7 @@
         <view class="titlev12-dark-text f12-font-32">购买数量</view>
         <view class="carnum acea-row row-left">
           <view style="border-radius: 40rpx  0rpx 0rpx 40rpx" class="cart-btn item reduce  v12-font-36 v12-font-bold v12-white-text v12-dark1 v12-dark1-border" :class="cartNum <= 1 ? 'on' : ''" @click="CartNumDes">-</view>
-          <view class="item v12-font-36 v12-font-bold v12-dark-text
-          
-          
-          cart-btn">{{ cartNum }}</view>
+          <view class="item v12-font-36 v12-font-bold v12-dark-text cart-btn">{{ cartNum }}</view>
           <view
             style="border-radius:0 40rpx 40rpx 0"
             class="item plus v12-font-bold v12-white-text v12-primary v12-primary-border  v12-font-36 cart-btn"
@@ -68,7 +65,11 @@ export default {
   props: {
     attr: {
       type: Object,
-      default: () => {}
+      default: () => {
+        return {
+          productAttr: []
+        }
+      }
     },
     // 使用字符串再转成对象的原因是，当key='2.5g'时，会变成key='2'，导致数据丢失
     productValueStr: {
@@ -102,12 +103,18 @@ export default {
       this.$emit("changeFun", { action: "ChangeCartNum", value: 1 })
     },
     getAttrItemData(attr) {
-      let result = {}
-      this.productValueArr.map(item => {
-        if (item.attrItemkey === attr) {
-          result = item
-        }
-      })
+      let result = {
+        stock: 0
+      }
+      if (this.attr.productAttr.length === 1) {
+        this.productValueArr.map(item => {
+          if (item.attrItemkey === attr) {
+            result = item
+          }
+        })
+      } else {
+        result.stock = 1
+      }
       return result
     },
     tapAttr: function(indexw, indexn, itemn) {