vue3按钮隐藏显示元素

		<n-button class="heise" strong round secondary  @click="plusOne">
			<div class="touxiang">div>
			<div class="name">云淡风轻🍃div>
			<div class="qian">￥2390.00div>
			<div class="lujing">
				<img src="../assets/路径3.png" />
			div>
		n-button>
 
		
		
					<table class="subnav" v-if="showArrow">
			<tr>
				<td>
					<div style="height: 80px;width: 100%;">div>
				td>
			tr>
			<tr>
				<td>
					<a href="#">
						<div class="jz">
							<div class="tx">div>
							<div class="mz">走路带风的沸沸div>
							<div class="sj">2020.07.20div>
						div>
					a>
				td>
			tr>
			<tr>
				<td> <a href="#">
						<div class="jz">
							<div class="tx">div>
							<div class="mz">走路带风的沸沸div>
							<div class="sj">2020.07.20div>
						div>
					a>td>
			tr>
			<tr>
				<td>
					<a href="#">
						<div class="jz">
							<div class="tx">div>
							<div class="mz">走路带风的沸沸div>
							<div class="sj">2020.07.20div>
						div>
					a>
				td>
			tr>
			<tr>
				<td>
					<a href="#">
						<div class="jz">
							<div class="tc">退出登录div>
						div>
					a>
				td>
			tr>
		table>

<script>
 
	import {
		defineComponent,
		h,
		onMounted,
		ref
	} from 'vue';
	import {
		NButton,
	} from 'naive-ui'
 
 
 
	export default defineComponent({
		components: {
			NButton,
		},
		setup() {
			let showArrow = ref(false)
			 function plusOne(){
			  showArrow.value = !showArrow.value
			  console.log(showArrow)
			
			  } 
 
			return {
				showArrow,
				plusOne
			}
		},
 
	})
script>