<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="main.css" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<title>Hello World</title>
</head>
<body>
<script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
<!-- 설치 코드 밑에 작성한 코드만 jquery적용 가능 -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"> </script>
<!-- 주의사항! 설치용 scropt에 코드 작성시 작동하지 않음 -->
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<span class="navbar-brand">Navbar</span>
<button class="navbar-toggler" type="button">
<span class="navbar-toggler-icon"></span>
</button>
</div>
</nav>
<ul class="list-group">
<li class="list-group-item">An item</li>
<li class="list-group-item">A second item</li>
<li class="list-group-item">A third item</li>
<li class="list-group-item">A fourth item</li>
<li class="list-group-item">And a fifth one</li>
</ul>
<script>
document.getElementsByClassName('navbar-toggler')[0].addEventListener('click', function(){
document.getElementsByClassName('list-group')[0].classList.add('show');
});
</script>
</body>
</html>
main.css
.list-group{
display : none;
}
.show{
display : block;
}
