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JavaScript/실습

[javascript] 부트스트랩(bootstrap), 쿼리셀렉터(querySelector)

by Angry Stock 2023. 1. 11.
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1. head 태그 안에 <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"> 복붙 한다. (마지막에 적용할 css의 파일 링크를 아래쪽으로)
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
    <link href="css/reset.css" rel="stylesheet">
    <link href="css/main.css" rel="stylesheet">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

</head>​
2. body 태그 가 끝나기 전에     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
을 복붙한다
<body>

    <script>
        

    </script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
</body>
3. UI이 적용할 html
<body>
    <nav class="navbar navbar-light bg-light">
        <div class="container-fluid">
            <span class="navbar-brand">Navbar</span>
            <button class="navbar-toggler" type="button" id="test">
                <span class="navbar-toggler-icon"></span>
            </button>
        </div>
    </nav>
    <ul class="list-group" id="test1">
        <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>

</body>​
4.  script
    <script>
            
        document.getElementsByClassName('navbar-toggler')[0].addEventListener('click', function() {
            document.getElementsByClassName('list-group')[0].classList.toggle('show');

        })
    </script>​

or

    <script>
        
        document.querySelector('.navbar-toggler').addEventListener('click', function() {
            document.querySelector('.list-group').classList.toggle('show');

        })
    </script>

or

    <script>
        
        document.querySelector('#test').addEventListener('click', function() {
            document.querySelector('#test1').classList.toggle('show');

        })
    </script>

or

    <script>
        
        document.querySelectorAll('.navbar-toggler')[0].addEventListener('click', function() {
            document.querySelectorAll('.list-group')[0].classList.toggle('show');

        })
    </script>
5. 출력화면

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