The ScrollNav component of WeChat applet YDUI implements scrolling navigation effect

<!--导航滚动 -->
<scroll-view class="tui-city-scroll" scroll-x="true" scroll-into-view="NAV{{status}}" scroll-with-animation="true">
 <text bindtap="getStatus" id="NAV{{index}}" class="tui-nav-li {{index === status ? &#39;tui-nav-active&#39; : &#39;&#39;}}" data-index="{{index}}" wx:for="{{navList}}">{{item}}</text>
</scroll-view>
<!--列表滚动区 -->
<view class="tui-fixed-y">
 <scroll-view class="tui-city-scroll-y" scroll-y="true" scroll-into-view="NAV{{status}}" scroll-with-animation="true">
 <view wx:for="{{navList}}">
  <view id="NAV{{index}}" class="tui-list-head">{{item}}</view>
  <view class="tui-list-li">{{item}} 列表 {{index}}</view>
 </view>
 </scroll-view>
</view>

.tui-fixed-x{
 width: 100%;
 position: fixed;
 top: 0;
 left: 0;
}
.tui-city-scroll{
 height: 80rpx;
 line-height: 80rpx;
 width: 100%;
 white-space: nowrap;
}
.tui-nav-li{
 font-size: 30rpx;
 padding: 0 8rpx;
}
.tui-nav-li:first-child{padding-left: 16rpx;}
.tui-nav-li:last-child{padding-right: 16rpx;}
.tui-nav-active{color: red;}

.tui-fixed-y{
 width: 100%;
 height: calc(100% - 80rpx);
 position: fixed;
 bottom: 0;
 left: 0;
}
.tui-city-scroll-y{
 padding: 0 20rpx;
 height: 100%;
 box-sizing: border-box;
}
.tui-list-head{
 height: 50px;
 line-height: 50px;
 text-align: center;
 font-size: 30rpx;
 color: blue;
}
.tui-list-li{
 height: 400px;
 padding: 10rpx;
 color: #fff;
 font-size: 50rpx;
 background-color: lightgreen;
}

Page({
 data: {
 navList: ['今日特惠', '烟灶推荐', '净水饮水推荐', '洗碗机推荐', '电热推荐', '燃热推荐', '消毒柜推荐', '嵌入式推荐', '商用电器','活动说明'],
 status: 0
 },
 getStatus(e){
 this.setData({ status: e.currentTarget.dataset.index})
 }
})