study_wxapp/pages/index/index.js

const app = getApp()

Page({
  data: {
    imgUrls:[
      "/assets/carousel/1.png",
      "/assets/carousel/2.png",
      "/assets/carousel/3.png"
    ],
    tableData: [],
    from: 0,
    size: 10,
    indicatorDots: false,
    autoplay: true,
    interval: 4000,
    duration: 800,
  },
  swiperChange(e) {
    const that = this;
    that.setData({
      swiperIndex: e.detail.current,
    })
  },
  onLoad: function(options) {
    this.setData({
      spinShow: true
    });
    this.search(true)
  },
  onPullDownRefresh() {
    this.setData({ spinShow: true });
    if (!this.loading) {
      this.setData({ from:0,tableData:[]});
      this.search(true)
    }
  },
  onReachBottom() {
    console.log( "onReachBottom", this.loading, this.data.from)
    if (!this.loading && this.data.from > -1) {
      this.search(false)
    }
  },
  search: function(override) {
    let _this = this
    let param = {from: override?0:this.data.from, size:this.data.size}
    app.formPost('Post.getPostList', param ).then(res => {
      _this.setData({spinShow: false});
      wx.stopPullDownRefresh()
      if (res.code === 200) {
        const re = res.data
        console.log( re )
        _this.setData({
          from: re.from,
          tableData: override ? re.list : this.data.tableData.concat(re.list)
        });
      }
    })
  }
})