text: // app.js
  App({
    onLaunch: function () {
      var that = this;
      if (this.globalData.userInfo) {
        typeof cb == "function" && cb(this.globalData.userInfo)
      } else {
        //调用登录接口
        wx.login({
          success: function () {
            wx.getUserInfo({
              success: function (res) {
                //console.info(res);
                that.globalData.userInfo = res.userInfo;
                typeof cb == "function" && cb(that.globalData.userInfo)
              }
            })
          }
        });
      }
    },
    globalData: {
      userInfo: null,
      appid:'wxd4c2f813e55879ad',
    }
  });
  
  