## 上拉刷新 [TOC]  ### js ``` onReachBottom() { var dataUrl = this.data.dataUrl; var count = this.data.count; this.data.start += count; //直接使用this.data.set就可以不用this.setData var start = this.data.start; var url = `${dataUrl}?start=${start}&count=${count}`; http(url, this.handleData); wx.showLoading({ title: "加载中..." }) }, ``` >在触底之后上拉，取到所需的内容进行http请求以及加载时的loading状态显示