add: 退款加减

src/pages/refund/refund.js

@@ -161,6 +161,68 @@ wxService.page({
       curType: this.data.resonType[event.detail.value]
     })
   },
+  minusNum: function (e) { // 减少数量
+    var cartList = this.data.cartList
+    var index = e.currentTarget.dataset.index
+    let proNum = cartList[index].count
+    console.log('减少数量', proNum)
+
+    if (proNum > 1) {
+      proNum--
+    } else {
+      wx.showToast({
+        title: '数量不能为0',
+        icon: 'none'
+      })
+      return false
+    }
+    cartList[index].count = proNum
+    this.setData({
+      cartList: cartList
+    }, ()=> {
+      // this.getReturnPrice()
+      // this.editOk(cartList[e]) //调用完成
+    })
+  },
+  addNum: function (e) { // 增加数量
+    var index = e.currentTarget.dataset.index
+    var cartList = this.data.cartList
+    var proNum = cartList[index].count
+    console.log('增加数量',proNum)
+
+    proNum++
+
+    cartList[index].count = proNum
+    this.setData({
+      cartList: cartList
+    }, () => {
+      
+    })
+    
+  },
+  inputNum: function (e) { // 输入数量
+    var newNum = e.detail.value
+    var order = this.data.cartList
+
+    var index = e.currentTarget.dataset.index
+    
+    var refundNum = order[index].count
+    console.log('inputNum', index, newNum, refundNum)
+    if (newNum === '' || newNum === '0') {
+      newNum = 1
+    } else {
+      newNum = parseInt(newNum)
+      if (newNum > refundNum) {
+        newNum = refundNum
+      }
+    }
+    order[index].count = refundNum
+    this.setData({
+      order: order
+    }, () => {
+      // this.getReturnPrice()
+    })
+  },
   /**
    * 生命周期函数--监听页面加载
    */

src/pages/refund/refund.wxml

@@ -21,17 +21,15 @@
 						<view class="pro-price">
 							<view class="price">￥ {{item.price}}</view>
 							<view class="pro-num-edit">
-								<button class="redus-num" data-index="{{j}}" catchtap="minusNum">-</button>
+								<button class="redus-num" data-index="{{index}}" catchtap="minusNum">-</button>
 								<input
 								 class="pro-num-edit-input"
 								 type="number"
-								 data-index="{{j}}"
-								 catchtap
-								 bindblur="blurNum"
+								 data-index="{{index}}"
 								 bindinput="inputNum"
 								 value="{{item.count}}"
 								/>
-								<button class="add-num" data-index="{{j}}" catchtap="addNum">+</button>
+								<button class="add-num" data-index="{{index}}" catchtap="addNum">+</button>
 							</view>
 						</view>
 					</view>