<scroll-view class="contaioner" scroll-y bindscroll="scroll" scroll-top="{{top}}" disableScroll="{{false}}">

<view class="item">{{top}}</view>

<view class="item" style="background:blue">{{top}}</view>

<view class="item" style="background:pink">{{top}}</view>

</scroll-view>

.contaioner{

width: 100%;

height: 100vh;

background-color: red;

}

.item{

width: 100%;

height: 100vh;

background-color: green;

}