微信小程序实现左右列表联动

<view class='header'> <text class='headerClass'>分类</text><text class='headerPin'>/品牌</text> <view class="search"> <image src='/images/搜索.png'></image><text>搜索商品</text> </view> </view> <view class='main'> <view class='left'> <scroll-view scroll-y="true" style="height: 1100rpx" scroll-into-view="true" scroll-with-animation="true"> <block wx:for="{{leftText}}" wx:for-list="item"> <view class="{{classfiySelect == item.id?'active':''}}" data-id='{{item.id}}' bindtap='left_list'> <text>{{item.text1}}</text> </view></block></scroll-view></view><view class='right'> <scroll-view scroll-y="true" style="height: 1100rpx" bindscroll="scroll" scroll-top="{{scrollTop}}" scroll-into-view="{{'inToview'+rigId}}" scroll-with-animation="true"><block wx:for="{{rightData}}" wx:for-list="item"><view class='itemTitle' id="{{'inToview'+item.id}}">{{item.title}}</view><view bindtap='particulars' class='listItem' data-id='{{item.id}}'> <block wx:for="{{item.frist}}"><view class='listItem2' data-text="{{}}"> <view class='img'> <image src='{{item.url}}'></image> </view> <view class='listText'> <text>{{item.text}}</text><text class='money'>¥{{item.money}}</text><view><text>已售{{item.sum}}</text><button size='mini' bindtap='particulars'>立即抢购</button></view> </view> </view> </block></view> </block> </scroll-view></view></view>

// pages/class/class.jsPage({  /** * 页面的初始数据 */ data: { classfiySelect: "", leftText: [{ id: "01", text1: "美妆专区", }, { id: "02", text1: "面部清洁", }, { id: "03", text1: "洗护专区", }, { id: "04", text1: "面膜", }, { id: "05", text1: "口红", }, { id: "06", text1: "美妆专区", }, { id: "07", text1: "面部清洁", }, { id: "08", text1: "洗护专区", }, { id: "09", text1: "面膜", }, { id: "010", text1: "口红", }, { id: "011", text1: "美妆专区", }, { id: "012", text1: "面部清洁", }, { id: "013", text1: "洗护专区", }, { id: "014", text1: "面膜", }, { id: "015", text1: "口红", }, { text1: "美妆专区", }, { text1: "面部清洁", }, { text1: "洗护专区", }, { text1: "面膜", }, { text1: "口红", },  ], rightData: [{ id: "01", title: "美妆专区", frist: [{  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  id:1,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  id: 2,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  }, ], }, { id: "02", title: "面部清洁", frist: [{  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  }, ], }, { id: "03", title: "洗护专区", frist: [{  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  }, ], }, { id: "04", title: "面膜", frist: [{  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  }, ], }, { id: "05", title: "口红", frist: [{  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  }, ], }, { id: "06", title: "美妆专区", frist: [{  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  },  {  url: "/images/85309.jpg",  text: "卡姿兰补水套装",  money: 200,  sum: 20,  }, ], }, ], },  /** * 生命周期函数--监听页面加载 */ onLoad: function(options) { this.setData({ classfiySelect: this.data.leftText[0].id }) },  /** * 生命周期函数--监听页面初次渲染完成 */ onReady: function() {  },  /** * 生命周期函数--监听页面显示 */ onShow: function() {  },  /** * 生命周期函数--监听页面隐藏 */ onHide: function() {  },  /** * 生命周期函数--监听页面卸载 */ onUnload: function() {  },  /** * 页面相关事件处理函数--监听用户下拉动作 */ onPullDownRefresh: function() {  },  /** * 页面上拉触底事件的处理函数 */ onReachBottom: function() {  },  /** * 用户点击右上角分享 */ onShareAppMessage: function() {  }, //滚动触发 scroll: function(e) { var scrollTop = e.detail.scrollTop, h = 0, classfiySelect; var that = this; that.data.leftText.forEach(function(clssfiy, i) { var _h =26 + that.length(clssfiy['id'])*102; if (scrollTop >= h){ classfiySelect = clssfiy['id']; } h +=_h; console.log(h); }) that.setData({ classfiySelect: classfiySelect, }) }, //求每一栏高度 length: function(e) { var that = this; var rightData = that.data.rightData; for (var i = 0; i < rightData.length; i++) { if(rightData[i]['id']==e){ return rightData[i]['frist'].length;  } } }, //点击左边事件 left_list: function(e) { var that = this; var l_id = e.currentTarget.dataset.id; that.setData({ rigId: l_id, }) }, //跳转详情界面 particulars:function(e){  }})

.header{ display: flex; background-color: rgba(219, 219, 221, 0.884); align-items: center; height: 60rpx;}.active{ color: red;}.header .headerClass{ color: red; margin-left: 20rpx;}.header .headerClass,.header .headerPin{ font-size: 28rpx;}.search{ display: flex; height: 46rpx; border-radius: 20rpx; margin-left: 30rpx; background-color:white; width: 70%;}.search text{ color: gainsboro; font-family: monospace; font-size: 30rpx; line-height: 46rpx; }.search image{ padding-left:50rpx;  width: 46rpx; height: 46rpx;}.main{ display: flex;}.left{ width: 25%}.left view{ padding-top: 30rpx; text-align: center;}.right{ width: 75%; } .listItem2{ display: flex;}.listItem .img{ width: 200rpx; height: 200rpx; text-align: center; padding-top: 10rpx;}.listItem .img image{ width: 80%; height: 80%}.itemTitle{ font-size: 32rpx; padding-left: 20rpx; padding-top: 10rpx; color:gray;}.listItem .listText{ display: flex; flex-direction: column; margin-top: 6rpx;}.listItem .listText view{ display: flex; align-items: flex-end;}.listItem .listText text{ font-size: 34rpx; margin-top: 10rpx;}.listItem .listText .money{ color: red;}.listItem .listText view text{ font-size: 28rpx; color :silver; margin-right: 60rpx;}.listItem .listText view button{ background-color: red; color: white; padding-right: 8px; padding-left: 8px; padding-top: 0px;}::-webkit-scrollbar{width: 6px;height: 6px;background-color: #ffffff;} ::-webkit-scrollbar-track{ height: 20rpx; color: black;}