基于better-scroll如何实现类似京东的分类列表

import Vue from 'vue'
import App from './App.vue'
import router from './router'
import '../src/assets/js/mock'
import axios from 'axios'
 
axios.defaults.baseURL='http://mockjs.com/api'
Vue.prototype.$http=axios
Vue.config.productionTip = false
 
new Vue({
 router,
 render: h => h(App)
}).$mount('#app')

import Vue from 'vue'
import Router from 'vue-router'
import './assets/css/iconfont.css' //全局引入字体图标
 
Vue.use(Router)
 
export default new Router({
 linkExactActiveClass:'active',
 mode: 'history',
 base: process.env.BASE_URL,
 routes: [
 {
 path: '/',
 name: 'home',
 component: ()=>import('./views/home.vue')
 },
 {
 path: '/class',
 name: 'class',
 component: () => import('./views/class.vue')
 },
 {
 path: '/shopcart',
 name: 'shopcart',
 component: () => import('./views/shopcart.vue')
 }, 
 {
 path:'/me',
 name:'me',
 component:()=>import('./views/me.vue')
 }
 ]
})

<template>
 <div id="app">
 <router-view></router-view>
 <v-tabbar></v-tabbar>
 </div>
</template>
<script>
import tabbar from '../components/tabbar';
export default {
 components:{
 'v-tabbar':tabbar,
 },
}
</script>
 
<style lang="scss">
* {
 margin: 0;
 padding: 0;
}
html {
 height: 100%;
}
body {
 height: 100%;
 background-color: #efeff4;
}
a {
 text-decoration: none;
 color: #000;
}
li {
 list-style: none;
}
.clearfix:after {
 content: '.';
 display: block;
 clear: both;
 visibility: hidden;
 height: 0;
 font-size: 0;
}
#app {
 font-family: "Avenir", Helvetica, Arial, sans-serif;
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 text-align: center;
 color: #2c3e50;
 height: 100%;
}
</style>

<template>
 <div class="tabbar">
 <div class="tabbar">
 <router-link class="tab_list" to="/" exact>
 <i class="iconfont">&#xe5ad;</i>
 <p>首页</p>
 </router-link>
 <router-link class="tab_list" to="/class">
 <i class="iconfont">&#xe62f;</i>
 <p>分类</p>
 </router-link>
 <router-link class="tab_list" to="/shopcart">
 <i class="iconfont">&#xe660;</i>
 <p>购物车</p>
 </router-link>
 <router-link class="tab_list" to="/me">
 <i class="iconfont">&#xe60d;</i>
 <p>我的</p>
 </router-link>
 </div>
 </div>
</template>
<style lang="scss" scoped>
.tabbar {
 position: fixed;
 display: flex;
 bottom: 0;
 left: 0;
 width: 100%;
 height: 42px;
 padding-top: 8px;
 background-color: #fff;
 .tab_list {
 flex: 1;
 i {
 font-size: 18px;
 }
 p {
 font-size: 14px;
 }
 }
 .active {
 color: #ffaf77;
 }
}
</style>
5、class.vue
<template>
 <div class="class">
 <div class="head">
 <i class="iconfont">&#xe62d;</i>
 <span>分类</span>
 </div>
 <div class="main">
 <div class="wrapper" ref="wrapper">
 <ul class="content">
 <!-- 分类列表 -->
 <li v-for="(item,index) in detialList" :key="index" @click="listClick(index)" :class="index===active&#63;'active':''">{{item.list}}</li>
 </ul>
 </div>
 <div class="detialList_box">
 <!-- 分类详情列表 -->
 <ul class="detialList clearfix" v-for="(item,index) in detialList" v-show="index===active" :key="index">
 <li class="detial_title">{{item.list}}</li>
 <li v-for="(item,index) in item.detial" :key="index">
 <img :src="item.src" alt="">
 <p>{{item.text}}</p>
 </li>
 </ul>
 <div class="padding_color"></div>
 </div>
 </div>
 </div>
</template>
<script>
import BScroll from "better-scroll";
export default {
 data() {
 return {
 detialList: [ //分类数据
 {
 list:'保健品',
 detial:[
 {src:require('../assets/images/shop1.png'),text:'爱他美'},
 {src:require('../assets/images/shop1.png'),text:'爱他美'},
 {src:require('../assets/images/shop1.png'),text:'爱他美'},
 {src:require('../assets/images/shop1.png'),text:'爱他美'},
 {src:require('../assets/images/shop1.png'),text:'爱他美'},
 {src:require('../assets/images/shop1.png'),text:'爱他美'},
 ]
 },
 {
 list:'酒水',
 detial:[
 {src:require('../assets/images/shop1.png'),text:'酒水'},
 {src:require('../assets/images/shop1.png'),text:'酒水'},
 {src:require('../assets/images/shop1.png'),text:'酒水'},
 {src:require('../assets/images/shop1.png'),text:'酒水'},
 {src:require('../assets/images/shop1.png'),text:'酒水'},
 {src:require('../assets/images/shop1.png'),text:'酒水'},
 ]
 },
 {
 list:'茶叶',
 detial:[
 {src:require('../assets/images/shop1.png'),text:'茶叶'},
 {src:require('../assets/images/shop1.png'),text:'茶叶'},
 {src:require('../assets/images/shop1.png'),text:'茶叶'},
 {src:require('../assets/images/shop1.png'),text:'茶叶'},
 {src:require('../assets/images/shop1.png'),text:'茶叶'},
 {src:require('../assets/images/shop1.png'),text:'茶叶'},
 ]
 },
 {
 list:'农产品',
 detial:[
 {src:require('../assets/images/shop1.png'),text:'农产品'},
 {src:require('../assets/images/shop1.png'),text:'农产品'},
 {src:require('../assets/images/shop1.png'),text:'农产品'},
 {src:require('../assets/images/shop1.png'),text:'农产品'},
 {src:require('../assets/images/shop1.png'),text:'农产品'},
 {src:require('../assets/images/shop1.png'),text:'农产品'},
 ]
 },
 ],
 active:0,
 detialtext:'保健品'
 };
 },
 methods: {
 listClick(index){ //显示隐藏分类详情
 this.active=index;
 this.detialtext=index;
 }
 },
 created() {
 // mockjs模拟数据
 // this.$http.get("/detial").then(res => {
 // this.detialList=res.data.detials
 // });
 },
 mounted() {
 this.$nextTick(() => {
 this.scroll = new BScroll(this.$refs.wrapper, { //better-scroll初始化
 scrollY, //竖向滚动
 click:true //滚动区域可触发点击事件
 });
 });
 }
};
</script>
<style lang="scss" scoped>
.class {
 height: 100%;
 .head {
 position: fixed;
 z-index: 999;
 top: 0;
 left: 0;
 height: 44px;
 width: 100%;
 line-height: 44px;
 text-align: center;
 color: #fff;
 background-color: #ff8c3c;
 i {
 position: absolute;
 left: 10px;
 }
 }
 .main {
 display: flex;
 height: 100%;
 .wrapper {
 overflow: hidden;
 width: 80px;
 height: 100%;
 background-color: #fff;
 .content {
 padding-top: 40px;
 padding-bottom: 80px;
 li {
 height: 40px;
 width: 80px;
 line-height: 40px;
 padding-left: 10px;
 text-align: left;
 background-color: #fff;
 border: 1px solid #efeff4;
 }
 .active {
 background-color: #efeff4;
 border-left: 2px solid #ff0000;
 }
 }
 }
 .detialList_box {
 flex: 1;
 overflow: hidden;
 margin: 0 8px;
 background-color: #fff;
 .detialList {
 padding-bottom: 20px;
 li {
 float: left;
 width: 33.3333333%;
 img {
 width: 100%;
 }
 }
 .detial_title{
 height: 40px;
 width: 100%;
 line-height: 40px;
 margin-top: 40px;
 background-color: #efeff4;
 }
 }
 .padding_color {
 background-color: #efeff4;
 height: 100%;
 }
 }
 }
}
</style>