小程序下拉刷新真机上不回缩问题解决

/**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {
    this.getCourseList();
    this.getErrBookList();
    this.getYouLike();
    this.getCoach();
    this.getBrowsedCourseList();
    this.getBrowsedVideo();
    wx.stopPullDownRefresh();
  },