bootstrap3-form-helptext 在线代码实例

实例代码( Tip: 登录后体验更佳 )

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<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 实例 - 表单帮助文本</title>
   <link href="//libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
   <script src="//libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
   <script src="//libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
</head>
<body>
<form role="form">
   <span>帮助文本实例</span>
   <input class="form-control" type="text" placeholder="">
   <span class="help-block">一个较长的帮助文本块，超过一行，
   需要扩展到下一行。本实例中的帮助文本总共有两行。</span>
</form>
</body>
</html>
 
 
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运行结果
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