Bootstrap5 复选框与单选框

2023-07-11 15:10 更新

如果您希望用户从预设选项列表中选择任意数量的选项，可以使用复选框：

<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap5 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/css/bootstrap.min.css" 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>复选框</h2>
  <p>.form-check-label 类添加到标签元素，.form-check 容器内添加 .form-check-input 类来设置复选框的样式。</p>
  <p>以下三个复选框，第一个默认选中，最后一个禁止选择：</p>
  <form action="/action_page.php">
    <div class="form-check">
      <input type="checkbox" class="form-check-input" id="check1" name="option1" value="something" checked>
      <label class="form-check-label" for="check1">Option 1</label>
    </div>
    <div class="form-check">
      <input type="checkbox" class="form-check-input" id="check2" name="option2" value="something">
      <label class="form-check-label" for="check2">Option 2</label>
    </div>
    <div class="form-check">
      <input type="checkbox" class="form-check-input" disabled>
      <label class="form-check-label">Option 3</label>
    </div>
    <button type="submit" class="btn btn-primary mt-3">Submit</button>
  </form>
</div>

</body>
</html>

复选框通过使用 class="form-check" 来确保标签和复选框有适当边距。

.form-check-label 类添加到标签元素，.form-check 容器内添加 .form-check-input 类来设置复选框的样式。

checked 属性用于设置默认选中的选项。

单选框

如果您希望用户从预设选项列表中选择一个选项，可以使用单选框：

<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap5 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/css/bootstrap.min.css" 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>单选框</h2>
  <p>下面的表单包含三个单选按钮，默认选中第一个选项，禁用最后一个选项：</p>
  <form action="/action_page.php">
    <div class="form-check">
      <input type="radio" class="form-check-input" id="radio1" name="optradio" value="option1" checked>
      <label class="form-check-label" for="radio1">Option 1</label>
    </div>
    <div class="form-check">
      <input type="radio" class="form-check-input" id="radio2" name="optradio" value="option2">
      <label class="form-check-label" for="radio2">Option 2</label>
    </div>
    <div class="form-check">
      <input type="radio" class="form-check-input" disabled>
      <label class="form-check-label">Option 3</label>
    </div>
    <button type="submit" class="btn btn-primary mt-3">Submit</button>
  </form>
</div>

</body>
</html>

切换开关

如果你想把复选框变成一个可切换的开关，可以在 .form-check 容器内使用 .form-switch 类:

<!DOCTYPE html>
<html>
<head>
  <title>Bootstrap5 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/css/bootstrap.min.css" 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>切换开关</h2>
  <p>如果你想把复选框变成一个可切换的开关，可以在 .form-check 容器内使用 .form-switch 类:</p>
  <form action="">
    <div class="form-check form-switch">
      <input class="form-check-input" type="checkbox" id="mySwitch" name="darkmode" value="yes" checked>
      <label class="form-check-label" for="mySwitch">Dark Mode</label>
    </div>
    <button type="submit" class="btn btn-primary mt-3">Submit</button>
  </form>
</div>

</body>
</html>

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