<template>   <div class="goodsListNav">     <div class="left">       <a         :href="'#' + item.id + 'a'"         class="leftItem"         @click="setIsAction(item,index)"         :style="isAction === index ? leftAction : ''"         v-for="(item,index) in list"         :key="index"       >{{item.name}}</a>     </div>     <div id="right">       <div :id="item.id + 'a'" class="item" v-for="(item,index) in list" :key="index">         {{item.name}}         <div           class="items"           v-for="(items,i) in item.ItemList"           :key="i"         >{{items.itemName}}----{{items.age}}</div>       </div>     </div>   </div> </template> <script> export default {   name: "goodsListNav",   props: {     list: {       type: Array,       default: []     }   },   data() {     return {       isAction: 0,       isBottom: false,       bottomNum: null,       leftAction: {         color: "yellow",         background: 'red'       }     };   },   mounted() {     let dom = document.getElementById('right')     dom.addEventListener("scroll", (res) => {       if (this.isBottom) {//到底的后往上滚动到底状态解除回到到底之前的状态         this.isAction = this.bottomNum         this.bottomNum = null         this.isBottom = false       }       let topDom = document.getElementById(this.isAction + 'a')//获取当前点亮的按钮       if (dom.scrollTop > (topDom.scrollHeight + topDom.offsetTop)) {//往下滚动         this.isAction = this.isAction + 1       } else if (dom.scrollTop + 1 < topDom.offsetTop) {//网上滚动         this.isAction = this.isAction - 1       } else if (dom.scrollHeight <= dom.scrollTop + dom.offsetHeight) {//到底存储最后一个状态，并设置到底的状态         this.bottomNum = this.isAction         this.isAction = this.list[this.list.length - 1].id         this.isBottom = true       }     });   },   methods: {     setIsAction(item, index) {       this.isAction = index;     }   } }; </script> <style scoped> @import "./goodsListNav.scss"; </style>

css

.goodsListNav{   height: 100%;   width: 100vw;   position: relative;   .left{     position: absolute;     top: 0;     left: 0;     width: 25vw;     height: 100%;     display: flex;     flex-direction: column;     .leftItem{       cursor: pointer;       padding: 10px 0;     }   }   #right{     width: 100vw;     padding-left: 25vw;     height: 100%;     overflow: scroll;     .item{       padding: 10px 0;       .items{         padding: 5px 0       }     }   } }

数据

list: [         {           name: 1,           id: 0,           ItemList: [             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1}           ]         },         {           name: 1,           id: 1,           ItemList: [             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1}           ]         },         {           name: 1,           id: 2,           ItemList: [             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1}           ]         },         {           name: 1,           id: 3,           ItemList: [             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1}           ]         },         {           name: 1,           id: 4,           ItemList: [             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1}           ]         },         {           name: 1,           id: 5,           ItemList: [             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1},             {itemName: 1,age: 1}           ]         }       ]

效果图

自己用vue手撸的一个h5外卖点餐双联列表