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
rush:js;">
var app = getApp()
Page({
data: {
newsList: [],lastid: 0,toastHidden: true,confirmHidden: 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,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({ confirmHidden: 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({ confirmHidden: true })
}
})
rush:xml;">
etoFill">
display:{{moreHidden}}">加载更多
提示" no-cancel confirm-text="明确" cancel-text="关闭" hidden="{{confirmHidden}}" bindconfirm="modalChange" bindcancel="modalChange">你当前不在在WIFI网格下下，会产生流量费用
创建页面样式（lists.wxss）
rush:css;">
.warp {height:100%;display:flex;flex-direction: column;padding:20rpx;}
navigator {overflow: hidden;}
.list {margin-bottom:20rpx;height:200rpx;position:relative;}
.imgs{float:left;}
.imgs image {display:block;width:200rpx;height:200rpx;}
.infos {float:left;width:480rpx;height:200rpx;padding:20rpx 0 0 20rpx}
.title {font-size:20px; font-family: Microsoft Yahei}
.dates {font-size:16px;color: #aaa; position: absolute;bottom:0;}
.loadMore {text-align: center; margin:30px;color:#aaa;font-size:16px;}
