wxml代码 <view class="wrap {{ticketFlag?'prevent':''}}">     <view class="box shadow-blue">         <view class="buy-title ellips1">{{info.info.title}}</view>         <view class="buy-time">开课时间： {{info.showTime}} / 共{{info.lesson_num}}课时</view>         <view class="buy-money">￥{{showmoney}}</view>         <view class="buy-old">原价:￥{{info.info.money}}</view>     </view>     <view class="sign-box shadow-blue">         <view class="input-item">             <text class="input-txt">选择分校:</text>             <picker bindchange="onChangeSchoolTab" class="input-el" range="{{info.teacher}}" rangeKey="school_name" value="{{index}}">                 <view class="picker">{{info.teacher[schoolChoose].school_name}}</view>             </picker>             <image class="input-arrow" src="../../resource/images/arroww.png"></image>         </view>         <view bindtap="closeTicket" class="input-item" wx:if="{{ticket.length>0}}">             <text class="input-txt">选优惠券:</text>             <view class="input-el">{{choose==-1?'不使用优惠券':ticket[choose].money+'元优惠券'}}</view>             <image class="input-arrow" src="../../resource/images/arroww.png"></image>         </view>         <view class="input-item">                 <text class="input-txt">班级信息:</text>                 <input bindinput="getRemark" class="input-el" placeholder="请填写班级信息" value="{{remark}}"></input>             </view>         <view class="input-item">             <text class="input-txt">姓名:</text>             <input bindinput="getUserName" class="input-el" placeholder="请填写姓名" value="{{username}}"></input>         </view>         <view class="input-item">             <text class="input-txt">联系电话:</text>             <input bindinput="getTel" class="input-el" placeholder="请填写联系电话" type="number" value="{{tel}}"></input>         </view>     </view> <form bindsubmit="onSendBuyTab" reportSubmit="true">         <button class="input-button shadow-blue" disabled="{{prevent}}" formType="submit">提交支付</button>     </form> </view> <zan-popup bind:click-overlay="closeTicket" show="{{ticketFlag}}" type="bottom">     <view class="ticket-box">         <view bindtap="chooseTicketTab" class="ticket-item shadow-blue" data-idx="{{index}}" wx:for="{{ticket}}" wx:key="{{index}}">             <view class="item-top">                 <view class="ellips1">{{item.money}}元优惠券</view>                 <button>使用</button>             </view>             <view class="item-time ellips1">满{{item.full}}元可用/有效期至:{{item.showtime}}</view>         </view>         <view catchtap="delTicketTab" class="cancle-ticket shadow-blue">不使用优惠券</view>     </view> </zan-popup> <sec-login bind:watch="onloadData" isLogin="true"></sec-login> js代码 var _extends = Object.assign || function(t) {     for (var a = 1; a < arguments.length; a++) {         var o = arguments[a];         for (var e in o) Object.prototype.hasOwnProperty.call(o, e) && (t[e] = o[e]);     }     return t; }, _reload = require("../../resource/js/reload.js"), _api = require("../../resource/js/api.js"), app = getApp(); Page(_extends({}, _reload.reload, {     data: {         ticketFlag: !1,         schoolChoose: 0,         choose: 0,         tel: "",         remark: ""     },     onLoad: function(t) {         this.setData({             cid: t.cid         });     },     onloadData: function() {         var o = this, t = {             cid: this.data.cid,             uid: wx.getStorageSync("userInfo").wxInfo.id         };         (0, _api.CourseDetailsData)(t).then(function(t) {             o.setData({                 info: t             });             var a = {                 money: o.data.info.info.nowmoney,                 uid: wx.getStorageSync("userInfo").wxInfo.id,                 sid: o.data.info.teacher[o.data.schoolChoose].sid             };             return (0, _api.CanUseData)(a);         }).then(function(t) {             o.setData({                 ticket: t,                 choose: 0             }), t.length < 1 && o.setData({                 choose: -1             }), o.setData({                 showmoney: -1 != o.data.choose ? (o.data.info.info.nowmoney - o.data.ticket[o.data.choose].money).toFixed(2) : o.data.info.info.nowmoney             });         }).catch(function(t) {             -1 === t.code ? o.tips(t.msg) : o.tips("false");         });     },     closeTicket: function() {         this.setData({             ticketFlag: !this.data.ticketFlag         });     },     onChangeSchoolTab: function(t) {         this.setData({             schoolChoose: t.detail.value         }), this.setData({             choose: 0         }), this.getTicketAjax();     },     getTicketAjax: function() {         var a = this, t = {             money: this.data.info.info.nowmoney,             uid: wx.getStorageSync("userInfo").wxInfo.id,             sid: this.data.info.teacher[this.data.schoolChoose].sid         };         (0, _api.CanUseData)(t).then(function(t) {             a.setData({                 ticket: t             }), t.length < 1 && a.setData({                 choose: -1             }), a.setData({                 showmoney: -1 != a.data.choose ? (a.data.info.info.nowmoney - a.data.ticket[a.data.choose].money).toFixed(2) : a.data.info.info.nowmoney             });         }).catch(function(t) {             -1 === t.code ? a.tips(t.msg) : a.tips("false");         });     },     getUserName: function(t) {         var a = t.detail.value.trim();         this.setData({             username: a         });     },     getTel: function(t) {         var a = t.detail.value.trim();         this.setData({             tel: a         });     },     chooseTicketTab: function(t) {         var a = t.currentTarget.dataset.idx;         this.setData({             choose: a         }), this.setData({             showmoney: -1 != this.data.choose ? (this.data.info.info.nowmoney - this.data.ticket[this.data.choose].money).toFixed(2) : this.data.info.info.nowmoney         }), this.closeTicket();     },     delTicketTab: function() {         this.setData({             choose: -1         }), this.setData({             showmoney: -1 != this.data.choose ? (this.data.info.info.nowmoney - this.data.ticket[this.data.choose].money).toFixed(2) : this.data.info.info.nowmoney         }), this.closeTicket();     },     getRemark: function(t) {       var a = t.detail.value.trim();       this.setData({           remark: a       });   },     onSendBuyTab: function(t) {         var a = this, i  = t.detail.formId, n = wx.getStorageSync("userInfo"), o = {             cid: this.data.cid,             uid: n.wxInfo.id,             username: this.data.username,             remark: this.data.remark,             tel: this.data.tel,             headurl: n.wxInfo.headimg,             formId: i,             sid: this.data.info.teacher[this.data.schoolChoose].sid         };         -1 != this.data.choose && 0 < this.data.ticket.length && (o.coupon_money = this.data.ticket[this.data.choose].money),          o.username.length < 2 ? wx.showToast({             title: "请填写正确姓名！",             icon: "none",             duration: 2e3         }) : o.tel.length < 11 ? wx.showToast({             title: "请填写正确手机号码！",             icon: "none",             duration: 2e3         }) : (0, _api.CourseSignData)(o).then(function(t) {             var o = a;             if (0 == a.data.info.info.nowmoney) return wx.showToast({                 title: "恭喜您，报名课程成功！",                 icon: "none",                 duration: 2e3             }), void setTimeout(function() {                 wx.navigateBack({                     delta: 1                 });             }, 1e3);             var e = t.sid;             wx.requestPayment({                 timeStamp: t.timeStamp,                 nonceStr: t.nonceStr,                 package: t.package,                 signType: t.signType,                 paySign: t.paySign,                 success: function(t) {                     var a = {                         sid: e,                         formId: i,                         cid: o.data.cid,                         uid: n.wxInfo.id                     };                     -1 != o.data.choose && (a.couponid = o.data.ticket[o.data.choose].couponid, a.coupon_money = o.data.ticket[o.data.choose].money),                      (0, _api.PaySuccessData)(a).then(function(t) {                         wx.showToast({                             title: "恭喜您，购买课程成功！",                             icon: "none",                             duration: 2e3                         }), setTimeout(function() {                             wx.navigateBack({                                 delta: 1                             });                         }, 1e3);                     });                 }             });         }).catch(function(t) {             wx.showToast({                 title: t.msg,                 icon: "none",                 duration: 2e3             });         });    数据库remark里面没有数值 [图片]