<template> <!-- #ifdef APP --> <scroll-view style="flex:1"> <!-- #endif --> <view> <button @click="handleUpdate">点击更新border样式</button> <view class="border-view" :style="borderStyle"></view> </view> <!-- #ifdef APP --> </scroll-view> <!-- #endif --> </template> <script setup> let borderStyle = ref("border:3px solid red;") const handleUpdate = () => { borderStyle.value = "border:7px solid red;" } </script> <style> .border-view { width: 150px; height: 150px; } </style>