Bootstrap 5:复选框和单选按钮


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复选框

如果您希望用户从预设选项列表中选择任意数量的选项,则可以使用复选框。

例子

<div class="form-check">
  <input class="form-check-input" type="checkbox" id="check1" name="option1" value="something" checked>
  <label class="form-check-label">Option 1</label>
</div>

自己尝试一下 →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Checkboxes</h2>
  <p>To style a checkbox, use a container element with a .form-check class, and add .form-check-label to labels, and .form-check-input to the input with type="checkbox".</p>
  <p>The form below contains three checkboxes. The first option is checked by default, and the last option is disabled:</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>

示例解释

要设置复选框样式,请使用带有 class="form-check" 的包装元素,以确保标签和复选框有适当的边距。

然后,将 .form-check-label 类添加到标签元素,并添加 .form-check-input.form-check 容器内正确设置复选框样式。

如果您希望默认选中该复选框,请使用 checked 属性。

单选按钮

如果您希望限制用户只能从预设选项列表中进行一项选择,则可以使用单选按钮。

例子

<div class="form-check">
  <input type="radio" class="form-check-input" id="radio1" name="optradio" value="option1" checked>Option 1
  <label class="form-check-label" for="radio1"></label>
</div>
<div class="form-check">
  <input type="radio" class="form-check-input" id="radio2" name="optradio" value="option2">Option 2
  <label class="form-check-label" for="radio2"></label>
</div>
<div class="form-check">
  <input type="radio" class="form-check-input" disabled>Option 3
  <label class="form-check-label"></label>
</div>

自己尝试一下 →

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Radio buttons</h2>
  <p>The form below contains three radio buttons. The first option is checked by default, and the last option is disabled:</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>

拨动开关

如果您希望将复选框样式设置为切换开关,请将 .form-switch 类与 .form- 一起使用检查容器:

例子

<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>

自己尝试一下→

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>

<div class="container mt-3">
  <h2>Toggle Switch</h2>
  <p>Try to submit the form with and without toggling the switch.</p>
  <form action="/action_page.php">
    <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>