产品详情页输入为空时bug修改

components/store/CommodityInfo.vue

@@ -245,55 +245,59 @@
         let buy = this.commodity.minBuyQty
         let reserve = this.commodity.reserve
         let breakUp = this.commodity.breakUp
-        newNum = parseInt(newNum)
-        if (breakUp) {
-          if (newNum < buy) {
-            this.$message.error('最小起订量为' + buy)
-            this.fragment.num = buy
-            this.fragment.canSub = false
-            this.fragment.canAdd = true
-          } else if (newNum > reserve) {
-            this.$message.error('库存不足')
-            this.fragment.num = reserve
-            this.fragment.canAdd = false
-            this.fragment.canSub = true
-          } else {
-            this.fragment.canSub = true
-            this.fragment.canAdd = true
-            this.fragment.num = newNum
-            newNum === buy && (this.fragment.canSub = false)
-            newNum === reserve && (this.fragment.canAdd = false)
-          }
+        if (!newNum) {
+          this.fragment.num = buy
         } else {
-          if (newNum < buy) {
-            this.$message.error('最小起订量为' + buy)
-            this.fragment.num = buy
-            this.fragment.canSub = false
-            if (newNum > reserve) {
+          newNum = parseInt(newNum)
+          if (breakUp) {
+            if (newNum < buy) {
+              this.$message.error('最小起订量为' + buy)
+              this.fragment.num = buy
+              this.fragment.canSub = false
+              this.fragment.canAdd = true
+            } else if (newNum > reserve) {
               this.$message.error('库存不足')
-              this.fragment.num = reserve - (reserve % pack)
+              this.fragment.num = reserve
               this.fragment.canAdd = false
+              this.fragment.canSub = true
+            } else {
+              this.fragment.canSub = true
+              this.fragment.canAdd = true
+              this.fragment.num = newNum
+              newNum === buy && (this.fragment.canSub = false)
+              newNum === reserve && (this.fragment.canAdd = false)
             }
-          } else if (newNum > reserve) {
-            this.fragment.canSub = true
-            this.fragment.canAdd = false
-            this.$message.error('库存不足')
-            this.fragment.num = reserve - (reserve % pack)
           } else {
-            this.fragment.canSub = true
-            this.fragment.canAdd = true
-            let remainder = newNum % pack
-            if (remainder !== 0) {
-              console.log(this.fragment.num)
-              this.$message.error('不支持拆包且包装量为' + pack)
-              // 这个直接赋值的，应该给这个值进行判断(Math.floor(newNum / pack) + 1) * pack
-              let res = (Math.floor(newNum / pack) + 1) * pack
-              this.fragment.num = res > reserve ? Math.floor(newNum / pack) * pack : res
+            if (newNum < buy) {
+              this.$message.error('最小起订量为' + buy)
+              this.fragment.num = buy
+              this.fragment.canSub = false
+              if (newNum > reserve) {
+                this.$message.error('库存不足')
+                this.fragment.num = reserve - (reserve % pack)
+                this.fragment.canAdd = false
+              }
+            } else if (newNum > reserve) {
+              this.fragment.canSub = true
+              this.fragment.canAdd = false
+              this.$message.error('库存不足')
+              this.fragment.num = reserve - (reserve % pack)
             } else {
-              this.fragment.num = newNum
+              this.fragment.canSub = true
+              this.fragment.canAdd = true
+              let remainder = newNum % pack
+              if (remainder !== 0) {
+                console.log(this.fragment.num)
+                this.$message.error('不支持拆包且包装量为' + pack)
+                // 这个直接赋值的，应该给这个值进行判断(Math.floor(newNum / pack) + 1) * pack
+                let res = (Math.floor(newNum / pack) + 1) * pack
+                this.fragment.num = res > reserve ? Math.floor(newNum / pack) * pack : res
+              } else {
+                this.fragment.num = newNum
+              }
+              newNum === buy && (this.fragment.canSub = false)
+              newNum === reserve && (this.fragment.canAdd = false)
             }
-            newNum === buy && (this.fragment.canSub = false)
-            newNum === reserve && (this.fragment.canAdd = false)
           }
         }
       },