小程序 调用globalData 的值为undefined解决方

app.js

var NowThis = this
  if (NowThis.AddsDataCallbacks) {
    NowThis.AddsDataCallbacks(res);
  }

调用页面

let that = this;

    app.AddsDataCallbacks = function(){

      that.setData({
        banner: app.globalData.banner
      });
    }