JSFiddle - React, Tailwind, and code Playground

HTML

<body>
	<a class="close" href="#">哈囉我是連結</a>
	<div class="box"></div>
</body>

CSS

.box{
	width: 300px;
	height: 300px;
	background: #000;
}

JavaScript

$(document).ready(function() {
	$('.close').click(function(event) {
		event.preventDefault();/*取消默認行為-a連結點擊不會連到網址去*/
		$('.box').slideToggle();
	});
});