微信小程序实现列表下拉刷新上拉加载

{
 "enablePullDownRefresh": true,
 "onReachBottomDistance": 50
}

<view class="tui-content">
 <view class="tui-menu-list" wx:for="{{dataList}}">Item -- {{item}}</view>
</view>

Page({
 data: {
 dataList: [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20],
 count : 0
 },
 onPullDownRefresh(){
 var self = this;
 setTimeout(() => {
 // 模拟请求数据，并渲染
 var arr = self.data.dataList, max = Math.max(...arr);
 for (var i = max + 1; i <= max + 3; ++i) {
 arr.unshift(i);
 }
 self.setData({ dataList: arr });
 // 数据成功后，停止下拉刷新
 wx.stopPullDownRefresh();
 }, 1000);
 },
 onReachBottom(){
 var arr = this.data.dataList, max = Math.max(...arr);
 if (this.data.count < 3) {
 for (var i = max + 1; i <= max + 5; ++i) {
 arr.push(i);
 }
 this.setData({
 dataList: arr,
 count: ++this.data.count
 });
 } else {
 wx.showToast({
 title: '没有更多数据了！',
 image: '../../src/images/noData.png',
 })
 }
 }
})