pages/scan/scan.js

// pages/scan/scan.js
Page({

  /**
   * 页面的初始数据
   */
  data: {
    scanurl: ''

  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function(options) {
    var url = wx.getStorageSync("scanurl");
    var userid = wx.getStorageSync("userid");
    // this.setData({
    //   scanurl:url
    // })
    var that=this;
    if (url.indexOf("dwz.cn") >= 0){
      console.log('init here');
      wx.request({
        url: url,
        method: 'GET',
        success: function (res) {
          var model = res.data;
          var index = model.indexOf('retcobillno');
          var index2 = model.indexOf(';');
          var rowbillno = model.substring(index, index2);
          var billno = rowbillno.substring(rowbillno.indexOf('=') + 1);
          var url = 'https://yy.dlsmk.cn/water/api/device/qrcode/pretend?cobillno=' + billno + '&userid=' + userid;

          wx.setStorageSync("trueurl", url);
          wx.navigateTo({
            url: '../scan2/scan2',
          })
        }
      })
    } else{
      console.log('init there');
      if (url.indexOf("?") > 0){
        url = url + '&userid=' + userid;
      }else{
        url = url + '?userid=' + userid;
      }
      console.log(url);
      this.setData({
       scanurl:url
     })
    }
  },

  getTrueUrl: function(res) {
    console.log(res.detail.src);
    var url = res.detail.src;
    if (url.indexOf("pretend") < 0){
      return;
    }
    if (url.indexOf("yy.dlsmk.cn") >= 0) {
      console.log("succ");
      var userid = wx.getStorageSync("userid");
      if (url.indexOf("?") > 0) {
        url = url + '&userid=' + userid;
      } else {
        url = url + '?userid=' + userid;
      }
      wx.setStorageSync("trueurl", url);
      wx.navigateTo({
        url: '../scan2/scan2',
      })
    }
  },

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

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function() {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function() {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function() {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function() {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function() {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function() {

  }
})