Fix：2585 【商城小程序】购物车--商品数量增减超出库存或少于最低拿货数时，增加提示“商品数量超出库存”和“商品数量不能减少了呦~”

pages/cart.vue

@@ -194,6 +194,7 @@
                   iconStyle="color: #fff"
                   class="num-step"
                   @change="e => changeNumHandle(index, gIndex, good, e)"
+                  @overlimit="overlimit"
                 >
                   <template v-slot:minus>
                     <view class="v12-minus-btn v12-font-bold flex jc-center ai-center">
@@ -549,6 +550,7 @@ export default {
     changeNumHandle(index, gIndex, good, e) {
       const { type } = e
       const value = good.cartNum + (type === 'plus' ? 1 : -1)
+      console.log('index', value);
       const id = good.id
       // uni.showLoading()
       changeCartNum(id, value).then(res => {
@@ -563,6 +565,16 @@ export default {
         }, 3000)
       })
     },
+    overlimit(e) {
+      const tip = {
+        'plus': '商品数量超出库存',
+        'minus': '商品数量不能减少了呦~'
+      }
+      uni.showToast({
+        title: tip[e],
+        icon: 'none'
+      })
+    },
     handleIds() {
       if (this.selectCount === 0) {
         uni.showToast({