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Bootstrap5 下拉菜單
2023-07-10 17:39 更新
下拉菜單可以是單選下拉菜單，也可以是多選的下拉菜單。
單選下拉菜單：
多選下拉菜單：
在 Bootstrap5 中下拉菜單 <select> 元素可以使用 .form-select 類來渲染 :
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap5 實例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="stylesheet">
<script src="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script>
</head>
<body>
<div class="container mt-3">
<h2>下拉菜單</h2>
<p>在 Bootstrap5 中下拉菜單 select 元素可以使用 .form-select 類來渲染 :</p>
<form action="">
<label for="sel1" class="form-label">單選下拉菜單：</label>
<select class="form-select" id="sel1" name="sellist1">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>
<br>
<label for="sel2" class="form-label">多選下拉菜單：</label>
<select multiple class="form-select" id="sel2" name="sellist2">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
<button type="submit" class="btn btn-primary mt-3">Submit</button>
</form>
</div>
</body>
</html>下拉菜單通過 .form-select-lg 或 .form-select-sm 類來修改大?。?br>
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap5 實例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="stylesheet">
<script src="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script>
</head>
<body>
<div class="container mt-3">
<h2>下拉菜單</h2>
<p>下拉菜單通過 .form-select-lg 或 .form-select-sm 類來修改大?。?lt;/p>
<form action="">
<label for="sel1" class="form-label">大號下拉菜單：</label>
<select class="form-select form-select-lg" id="sel1" name="sellist1">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>
<br>
<label for="sel2" class="form-label">正常下拉菜單：</label>
<select class="form-select" id="sel2" name="sellist2">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
<label for="sel3" class="form-label">小號下拉菜單：</label>
<select class="form-select form-select-sm" id="sel3" name="sellist3">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
<button type="submit" class="btn btn-primary mt-3">Submit</button>
</form>
</div>
</body>
</html>效果如下圖：
disabled 屬性可以禁止下拉菜單被選擇：
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap5 實例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="stylesheet">
<script src="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script>
</head>
<body>
<div class="container mt-3">
<h2>禁用下拉菜單</h2>
<p>disabled 屬性可以禁止下拉菜單被選擇：</p>
<form action="">
<label for="sel" class="form-label">禁用下拉菜單：</label>
<select class="form-select" id="sel" name="sellist" disabled>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
<button type="submit" class="btn btn-primary mt-3">Submit</button>
</form>
</div>
</body>
</html>數(shù)據(jù)列表
Bootstrap 也可以通過 datalist 標簽為 <input> 元素設置下拉菜單：
以下實例從列表中選擇一個網(wǎng)站：
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap5 實例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="stylesheet">
<script src="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script>
</head>
<body>
<div class="container mt-3">
<h2>數(shù)據(jù)列表</h2>
<form action="/action_page.php">
<label for="browser" class="form-label">選擇你喜歡的網(wǎng)站：</label>
<input class="form-control" list="sites" name="site" id="site">
<datalist id="sites">
<option value="Google">
<option value="Runoob">
<option value="Taobao">
<option value="Wiki">
<option value="Zhihu">
</datalist>
<button type="submit" class="btn btn-primary mt-3">Submit</button>
</form>
</div>
</body>
</html>效果如下圖：
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