anchor.diff:  
               <div class="am-tabs-bd">
                   <div class="am-tab-panel am-fade am-in am-active" id="tab3">
  +                    <div class="am-g am-margin-top-sm">
  +                        <label for="_dcount" class="am-u-sm-2 am-form-label mz-admin-label-fixed">已购数量</label>
  +                        <div class="am-u-sm-4 am-u-end">
  +                            <input id="_dcount" name="_dcount" value="${item.dcount}" type="text" class="am-input-sm" readonly>
  +                        </div>
  +                    </div>
                       <div class="am-g am-margin-top-sm">
                           <label for="inpDcount" class="am-u-sm-2 am-form-label mz-admin-label-fixed">退货数量</label>
                           <div class="am-u-sm-4 am-u-end">
  
positive.code:             <jsp:param name="info3" value="return"/>
          </jsp:include>
  
          <form id="fmMain" name="fmMain" action="${base}/sale/order/return/s2.io" class="am-form am-form-horizontal">
          <input type="hidden" name="id" value="${item.id}">
          <div class="am-tabs am-margin">
              <ul class="am-tabs-nav am-nav am-nav-tabs">
  
negative.code:     $(function () {
          mess.sidebar.load(mess.sidebar.bars.SALE);
          var dprice = "${item.dprice}";
          var dcount = "${item.dcount}";
          $('#inpDcount').keyup(function(){
              var rcount = $(this).val();
              if (!raw.re.patterns.integer_gt0.test(rcount)) {
                  alert("请输入正整数!");
                  $(this).val(dcount);
                  $(this).focus();
                  return false;
              } else if (rcount > dcount) {
                  alert("退货数量不能大于购买数量!");
                  $(this).val(dcount);
                  $(this).focus();
                  return false;
              }
              $("#inpPayment").val($(this).val() * dprice);
          });
          $("form").submit(function() {
              var rcount = $("#inpDcount").val();
              if (!raw.re.patterns.integer_gt0.test(rcount)) {
                  alert("请输入正整数!");
                  $(this).val(dcount);
                  $(this).focus();
                  return false;
              } else if (rcount > dcount) {
                  alert("退货数量不能大于购买数量!");
                  $(this).val(dcount);
                  $(this).focus();
                  return false;
              }
          });
          $("#btnList").click(function() {
              document.location = "${base}/sale/order/list.io";
          });
      });
  
  