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Bootstrap5 表單浮動(dòng)標(biāo)簽
2023-07-12 16:10 更新
默認(rèn)情況下，標(biāo)簽內(nèi)容一般顯示在 input 輸入框的上方：
使用浮動(dòng)標(biāo)簽，可以在 input 輸入框內(nèi)插入標(biāo)簽，在單擊 input 輸入框時(shí)使它們浮動(dòng)到上方
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap5 實(shí)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="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" ></script>
</head>
<body>
<div class="container mt-3">
<h2>表單浮動(dòng)標(biāo)簽 - input</h2>
<p>點(diǎn)擊輸入框查看浮動(dòng)效果:</p>
<form action="/action_page.php">
<div class="form-floating mb-3 mt-3">
<input type="text" class="form-control" id="email" placeholder="Enter email" name="email">
<label for="email">Email</label>
</div>
<div class="form-floating mt-3 mb-3">
<input type="text" class="form-control" id="pwd" placeholder="Enter password" name="pswd">
<label for="pwd">Password</label>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>
</body>
</html>注意事項(xiàng)： <label> 元素必須在 <input> 元素之后，并且每個(gè) <input> 元素都需要 placeholder 屬性。
文本框
文本框 textarea 也可以有浮動(dòng)效果：
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap5 實(shí)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="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" ></script>
</head>
<body>
<div class="container mt-3">
<h2>表單浮動(dòng)標(biāo)簽 - textarea</h2>
<p>點(diǎn)擊文本框查看浮動(dòng)效果:</p>
<form action="/action_page.php">
<div class="form-floating mb-3 mt-3">
<textarea class="form-control" id="comment" name="text" placeholder="Comment goes here"></textarea>
<label for="comment">Comments</label>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>
</body>
</html>選擇框
我們可以在選擇菜單上使用浮動(dòng)標(biāo)簽，它將始終顯示在選擇菜單的左上角，不會(huì)有點(diǎn)擊浮動(dòng)效果：
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap5 實(shí)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="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" ></script>
</head>
<body>
<div class="container mt-3">
<h2>表單浮動(dòng)標(biāo)簽 - select</h2>
<p>我們可以在選擇菜單上使用浮動(dòng)標(biāo)簽，它將始終顯示在選擇菜單的左上角，不會(huì)有點(diǎn)擊浮動(dòng)效果：</p>
<form action="/action_page.php">
<div class="form-floating mb-3 mt-3">
<select class="form-select" id="sel1" name="sellist">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>
<label for="sel1" class="form-label">Select list (select one):</label>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>
</body>
</html>以上內(nèi)容是否對(duì)您有幫助：
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