jzlife_wx_servant/pages/serviceSupply/serviceSupply.wxml

<wxs src='../../utils/formatFuc.wxs' module="utils"></wxs>
<view class="supply-top">
  <view class="supply-item" wx:for="{{supplyList}}" wx:key="index">

	<view class="item-main">
	 <view class="row-type" bindtap="showTypePicker" data-index="{{index}}">
	 <view class="type-title">
		<text>*</text>补差项 {{index+1}}
	 </view>
	 <view class="type-content">
		{{item.itemName}}
	 </view>
	 <van-icon name="arrow" size="20px" color="#999"/>

	 </view>
	 <view class="row-num">
		<view class="num-title">
		<text>*</text>选择份数
	 </view>
	 <view class="num-block">
	   <view class="minus-btn" bindtap="minusNum" data-index="{{index}}"  data-price="{{item.price}}"  data-num="{{item.number}}">-</view>
		 <view class="current-num">{{item.number}}</view>
		 <view class="add-btn"  data-price="{{item.price}}" bindtap="addNum" data-index="{{index}}" data-num="{{item.number}}">+</view>
	 </view>
	 </view>
	  <view class="row-amount">
		<view>补差项金额</view>
		<view>¥  {{item.difTotalPrice}}元</view>
		</view>
	</view>
	<view class="item-operate-special" wx:if="{{supplyList.length==1}}">
	   <view class="disable-item">
			删除补差项</view>
			<view class="add-item" bindtap="addItem">
		添加补差项
	</view>

	</view>
	<view class="item-operate" wx:if="{{supplyList.length>1}}">
	   <view class="del-item" bindtap="delItem" data-index="{{index}}">
			删除补差项</view>
	</view>

	</view>
	<view class="add-item" wx:if="{{supplyList.length>1}}" bindtap="addItem">
		添加补差项
	</view>

</view>
<view class="supply-bottom">
  <view class="total-amount">
	<view class="title">总计补差金额</view>
	<view>	¥ <text>{{totalAmount}}</text> 元</view>
	
	</view>
	<view class="order-button" bindtap="createOrder">生成支付订单</view>
</view>
<van-popup show="{{showPicker}}" position="bottom">

<van-picker show-toolbar columns="{{columns}}" 
title="请选择补差项"
bind:cancel="pickerCancel" bind:confirm="pickerConfirm" 
/>
</van-popup>