微信小程序页面上下滚动效果

<view class="container container-fill">
 <view class="scroll-fullpage" bindtouchstart="scrollTouchstart" bindtouchmove="scrollTouchmove" bindtouchend="scrollTouchend" >
 <view class="section section01 {{scrollindex==0?'active':''}}" >
  <text class="section-maintitle">页面1</text>
  <text class="section-subtitle">我的页面”1</text>
 </view>
 <view class="section section02 {{scrollindex==1?'active':''}}" >
  <text class="section-maintitle">页面2</text>
  <text class="section-subtitle">我的页面”2</text>
 </view>
 <view class="section section03 {{scrollindex==2?'active':''}}" >
  <text class="section-maintitle">页面3</text>
  <text class="section-subtitle">我的页面”3</text>
 </view>
 <view class="section section04 {{scrollindex==3?'active':''}}" >
  <text class="section-maintitle">页面4</text>
  <text class="section-subtitle">我的页面”4</text>
 </view>
 <view class="section section05 {{scrollindex==4?'active':''}}" >
  <text class="section-maintitle">无缝对接双创服5</text>
  <text class="section-subtitle">我的页面”5</text>
 </view>
 </view>
</view>

Page({
 data: {
  scrollindex:0, //当前页面的索引值
  totalnum:5, //总共页面数
  starty:0, //开始的位置x
  endy:0, //结束的位置y
  critical: 100, //触发翻页的临界值
  margintop:0, //滑动下拉距离
 },
 onLoad: function () {
 },
 scrollTouchstart:function(e){
  let py = e.touches[0].pageY;
  this.setData({
   starty: py
  })
 },
 scrollTouchmove:function(e){
  let py = e.touches[0].pageY;
  let d = this.data;
  this.setData({
   endy: py,
  })
  if(py-d.starty<100 && py-d.starty>-100){  
   this.setData({
    margintop: py - d.starty
   })
  }
 },
 scrollTouchend:function(e){
  let d = this.data;
  if(d.endy-d.starty >100 && d.scrollindex>0){
   this.setData({
    scrollindex: d.scrollindex-1
   })
  }else if(d.endy-d.starty <-100 && d.scrollindex<this.data.totalnum-1){
   this.setData({
    scrollindex: d.scrollindex+1
   })
  }
  this.setData({
    starty:0,
    endy:0,
    margintop:0
  })
 },
})

.container-fill{
 height: 100%;
 overflow: hidden;
}
.scroll-fullpage{
 height: 100%;
 transition: all 0.3s;
}
.section{
 height: 100%;
}
.section-maintitle{
 display: block;
 text-align: center;
 font-size: 50rpx;
 color: #fff;
 font-weight: bold;
 letter-spacing: 10rpx;
 padding-top: 140rpx;
}
.section-subtitle{
 display: block;
 text-align: center;
 font-size: 40rpx;
 color: #fff;
 font-weight: bold;
 letter-spacing: 10rpx;
}
.active .section-maintitle,
.active .section-subtitle{
 animation: mymove 0.8s;
}
@keyframes mymove{
 from {
 transform: translateY(-400rpx) scale(0.5) rotateY(90deg);
 }
 to {
 transform: translateY(0) scale(1) rotateY(0);
 }
}