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>