Bootstrap Horizo​​ntal Form标签以及静音标题

Question

如果我想在订单标签下面添加一个标题<small class="text-muted">Must be at least 200</small>，我在下面的Bootstrap Horizo​​ntal表单中放置它？ 注意：问题与如何在Bootstrap水平表单标签下方的小静音字体中放置一个静音标题有关。我知道占位符属性的作用，但在实际应用中，我需要在表单标签下放置这样的标题。

＆＃13;

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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

<div class="container">
  <h2>Horizontal form</h2>
  <form class="form-horizontal" action="/action_page.php">
    <div class="form-group">
      <label class="control-label col-sm-2" for="email">Email:</label>
      <div class="col-sm-10">
        <input type="email" class="form-control" id="email" placeholder="Enter email" name="email">
      </div>
    </div>
    <div class="form-group">
      <label class="control-label col-sm-2" for="pwd">Password:</label>
      <div class="col-sm-10">          
        <input type="password" class="form-control" id="pwd" placeholder="Enter password" name="pwd">
      </div>
    </div>
    <div class="form-group">        
      <div class="col-sm-offset-2 col-sm-10">
        <div class="checkbox">
          <label><input type="checkbox" name="remember"> Remember me</label>
        </div>
      </div>
    </div>
    <div class="form-group">        
      <div class="col-sm-offset-2 col-sm-10">
        <button type="submit" class="btn btn-default">Submit</button>
      </div>
    </div>
  </form>
</div>

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Answer 1

您可以使用新的<label>对div进行换行，将col-sm-2移到该div并在其中添加small元素：

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

<div class="container">
  <h2>Horizontal form</h2>
  <form class="form-horizontal" action="/action_page.php">
    <div class="form-group">
      <div class="col-sm-2">
        <label class="control-label" for="email">Email:</label><br />
        <small class="text-muted">Must be at least 200</small>
      </div>
      <div class="col-sm-10">
        <input type="email" class="form-control" id="email" placeholder="Enter email" name="email">
      </div>
    </div>
    <div class="form-group">
      <div class="col-sm-2">
        <label class="control-label" for="pwd">Password:</label><br />
        <small class="text-muted">Must be at least 200</small>
      </div>
      <div class="col-sm-10">          
        <input type="password" class="form-control" id="pwd" placeholder="Enter password" name="pwd">
      </div>
    </div>
    <div class="form-group">        
      <div class="col-sm-offset-2 col-sm-10">
        <div class="checkbox">
          <label><input type="checkbox" name="remember"> Remember me</label>
        </div>
      </div>
    </div>
    <div class="form-group">        
      <div class="col-sm-offset-2 col-sm-10">
        <button type="submit" class="btn btn-default">Submit</button>
      </div>
    </div>
  </form>
</div>

  

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