微信小程序下拉刷新功能

<view style=" height: 700rpx;background:#fce2ad; "></view>
<button class='btn1' bindtap="saveCourceInfo">下拉刷新功能</button>

const app = getApp()
Page({
  data: {
    loading: false,
  },
  onPullDownRefresh() {
    //this.getWelfareList()
    wx.showLoading({
      title: 'loading...',
    }),
      setTimeout(function () {
        wx.hideLoading()
        wx.stopPullDownRefresh()
      })
  }
})

{
  "usingComponents": {},
  "enablePullDownRefresh": true
}