Vue 3.2 defineProps 用法

• 父元件

<template>
    <Product :main_category_id="main_category_id" :sub_category_id="sub_category_id"/>
</template>

• 子元件

<script setup>
    const props = defineProps({
        main_category_id: String,
        sub_category_id: String
    });
　　//props.main_category_id
</script>