- 创建一个滚动组件
<template>
<div class="qwNumBox" style="width: 36px;height:48px;">
<div class="trasBox" :style="{ top:( -1 * value * 48) +'px' }">
<div class="qwnum">0</div>
<div class="qwnum">1</div>
<div class="qwnum">2</div>
<div class="qwnum">3</div>
<div class=