<script setup>语法糖

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如果不使用语法糖，需要进行导出，否则无法使用组件

import Helloworld from'./components/Helloworld.vue'

export default {
	name: 'App',
	components:{
		Helloworld
	}
}

昨天的报错就是因为我忘记写setup了

Failed to resolve component: NavBar
If this is a native custom element, make sure to exclude it from component resolution via compilerOptions.isCustomElement.

动态组件

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props与emit

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