具体模板如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" />
<title>基于Vant商品分类左右联动</title>
<!-- 引入样式文件 -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/lib/index.css" />
</head>
<body>
<div id="app">
<div>
<van-tabs v-model="active" scrollspy>
<van-tab v-for="index in 8" :title="'选项选项'+index">
<div style="height: 150px;">
内容 {