//下拉刷新
onPullDownRefresh: function () {
var that = this;
that.loadClass();
that.loadMore();
wx.showNavigationBarLoading();// 显示顶部刷新图标
wx.hideNavigationBarLoading(); // 隐藏导航栏加载框
wx.stopPullDownRefresh();// 停止下拉动作
},
//上拉触底获取数据===============
onReachBottom: function () {
var that = this;
that.loadMore();
},
