小程序下拉刷新

 // 页面下拉动作
  async onPullDownRefresh() {
    uni.showToast({
      title:"刷新成功",
      icon:"none"
    })
    this.params.pagenum = 1;
    // 需要清空数据
    await this.getList(true);
    uni.stopPullDownRefresh();
  },

{
    "path": "pages/goods_list/index",
    "style": {
    "navigationBarTitleText": "商品列表",
    "enablePullDownRefresh": true
        }
},