laundry/pages/my/cashier/cashier.js

// pages/my/cashier/cashier.js
const app=getApp();
Page({

    /**
     * 页面的初始数据
     */
    data: {
        order_no:"",
        pageinfo:{},
        price:0,
        give_price:0,
        is_online:1,
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {
        var that=this;
        this.setData({
            order_no:options.order_no,
            is_online:wx.getStorageSync('is_online')
        });
        app.api.useApi(app.globalData.baseAppUrl + "api/recharge/order", {
          order_no: options.order_no,
      }, "get").then(function (res) {
          console.log(res)
          if (res.code != 200) {
              wx.showLoading({
                  title: res.message.msg,
              })
              setTimeout(function () {
                  wx.hideLoading({
                      success: (res) => { },
                  })
              }, 1000);
          } else {
            var pageinfo=res.message.data
              that.setData({
                  pageinfo: pageinfo,
              })

              if(pageinfo.total_money<=0 || parseFloat(pageinfo.total_money) - parseFloat(pageinfo.price)<=0){
          
                var price=parseFloat(pageinfo.price)-parseFloat(pageinfo.total_money)
    
                that.setData({price:price})
                }
          }
      }).catch(function (err) {console.log(err)})
    },

    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function () {

    },

    pay(){
        let that = this

            if(that.data.price>0){
                this.wxPay();
            }else{
                this.opay();
            }
        
    },
    opay(){
      var that=this;
      var no=that.data.order_no
      app.api.useApi(app.globalData.baseAppUrl + "api/payment", {
        order_no: no,
    }, "post").then(function (res) {
        console.log(res)
        if (res.code != 200) {
            wx.showLoading({
                title: res.message.msg,
            })
            setTimeout(function () {
                wx.hideLoading({
                    success: (res) => { },
                })
            }, 1000);
        } else {
            wx.navigateTo({
                url: '/pages/order/detail/detail?order_no='+no
            })
        }
    }).catch(function (err) {console.log(err)})

        // wx.switchTab({
        //   url: '/pages/tabber/order/index',
        // })
    },
    click(e){
       // this.pageinfo.price=e.currentTarget.dataset.price;
        this.setData({
            price:e.currentTarget.dataset.price,
            give_price:e.currentTarget.dataset.gprice,
        })
    },
    wxPay(){
        var that=this;
        var no=that.data.price
        app.api.useApi(app.globalData.baseAppUrl + "api/recharge/charge", {
            price: no,
      }, "post").then(function (res) {
          console.log(res)
          if (res.code != 200) {
              wx.showLoading({
                  title: res.message.msg,
              })
              setTimeout(function () {
                  wx.hideLoading({
                      success: (res) => { },
                  })
              }, 1000);
          } else {
            var paydata=res.message.data
            wx.requestPayment({
                timeStamp: paydata.timeStamp,
                nonceStr: paydata.nonceStr,
                package: paydata.package,
                signType: paydata.signType,
                paySign: paydata.paySign,
                success (res) { 
                    console.log(res);
            if(res.errMsg=="requestPayment:ok"){
                that.opay();
            }
                },
                fail (res) { 
                    wx.showLoading({
                        title: "失败，请重试！",
                    })
                    setTimeout(function () {
                        wx.hideLoading({
                            success: (res) => { },
                        })
                    }, 1000);
                    console.log(res)}
              })

          }
      }).catch(function (err) {console.log(err)})
       
    },
 
    back:function(){
        wx.redirectTo({
          url: '/pages/order/detail/detail?order_no='+this.data.order_no,
        })
    }
})