微信小程序页面滑动屏幕加载数据效果

滑动屏幕加载数据是任何小程序中都会用到的功能，本文我就将这个功能整理给大家，希望对大家有意。我们先看看效果图：

创建目录

首先我们现在项目中创建资讯目录，以下是我自己创建的目录，大家可以根据自己的需求创建。如图所示：

创建lists.js文件

以下是lists.js代码

var app = getApp()
Page({
 data: {
 newsList: [],
 lastid: 0,
 toastHidden: true,
 /confirm/iHidden: true,
 isfrist: 1,
 loadHidden: true,
 moreHidden: 'none',
 msg: '没有更多文章了'
 },
 loaddata: function (lastid) {
 //显示出加载中的提示
 this.setData({ loadHidden: false })
 var limit = 10
 var that = this
 wx.request({
  url: 'http://127.0.0.1:9090/hpm_bill_web/news/getnewslist', //数据接口
  data: { lastid: lastid, limit: limit },
  header: {
  'Content-Type': 'application/json'
  },
  success: function (res) {
  if (!res.data) {
   that.setData({ toastHidden: false })
   that.setData({ moreHidden: 'none' })
   return false
  }
  var len = res.data.length
  var oldLastid = lastid
  if(len != 0) {
   that.setData({ lastid: res.data[len - 1].id })
  } else {
   that.setData({ toastHidden: false})
  }
  var dataArr = that.data.newsList
  var newData = dataArr.concat(res.data);
   if (oldLastid == 0) {
   wx.setStorageSync('CmsList', newData)
   }
  that.setData({ newsList: newData })
  that.setData({ moreHidden: '' })
  },
  fail: function (res) {
  if (lastid == 0) {
   var newData = wx.getStorageSync('CmsList')
   if(newData) {
   that.setData({ newsList: newData })
   that.setData({ moreHidden: '' })
   var len = newData.length
   if (len != 0) {
    that.setData({ lastid: newData[len - 1].id })
   } else {
    that.setData({ toastHidden: false })
   }
   console.log('data from cache');
   }
   } else {
   that.setData({ toastHidden: false, moreHidden: 'none', msg: '当前网格异常，请稍后再试' })
   }
  },
  complete: function () {
  //显示出加载中的提示
  that.setData({ loadHidden: true })
  }
 })
 },
 loadMore: function (event) {
 var id = event.currentTarget.dataset.lastid
 var isfrist = event.currentTarget.dataset.isfrist
 var that = this
 wx.getNetworkType({
  success: function (res) {
  var networkType = res.networkType // 返回网络类型2g，3g，4g，wifi
  if (networkType != 'wifi' && isfrist == '1') {
   that.setData({ /confirm/iHidden: false })
  }
  }
 })
 this.setData({ isfrist: 0 })
 this.loadData(id);
 },
 onLoad: function () {
 var that = this
 this.loadData(0);
 },
 toastChange: function () {
 this.setData({ toastHidden: true })
 },
 modalChange: function () {
 this.setData({ /confirm/iHidden: true })
 }
})

创建页面文件（lists.wxml）