<!-- case 1 -->
<template>
<textarea v-scroll />
</template>
<!-- case 2 -->
<template>
<textarea v-scroll="true" />
</template>
<!-- case 3 -->
<template>
<textarea v-scroll="false" />
</template>
<!-- case 4 -->
<template>
<textarea v-scroll="shouldScroll" />
</template>
<!-- case 1 -->
<template>
<!-- 单指按下400ms, 触发 -->
<textarea v-longtouch="callback" />
</template>
<!-- case 2 -->
<template>
<!-- 单指按下500ms, 触发 -->
<textarea v-longtouch:500="callback" />
</template>
<script setup>
function callback() {
// doSomething
}
</script>