study_wxapp/pages/index/index.js

//index.js
//获取应用实例
const app = getApp()

Page({
  data: {
    spinShow: false,
    groups: [],
    pushPaper: [],
    timeLimitPaper: [],
    taskList: []
  },
  onLoad: function() {
    this.setData({
      spinShow: true
    });
    app.checkLogin( this.indexLoad)
  },
  onPullDownRefresh() {
    this.setData({
      spinShow: true
    });
    if (!this.loading) {
      this.indexLoad()
    }
  },
  indexLoad: function() {
    let _this = this
    app.formPost('Exam.index', {}).then(res => {
      _this.setData({
        spinShow: false
      });
      wx.stopPullDownRefresh()
      if (res.code === 200) {
        console.log( res.data )
        _this.setData({
          groups: res.data.groups
        });
      }
    })
  }
})