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源代码：
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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>扩展简单的警告信息的实例</title> <meta name="description" content="Extending simle alert with bootstrap. This example shows usage of alert, alert-block and alert-heading"> <link href="/jscss/bootstrap/v3/bootstrap.css" rel="stylesheet"> <style type="text/css"> body { padding: 50px; } </style> </head> <body> <div class="container"> <div class="row"> <div class="span4"> <div class="alert alert-block"> <a class="close" data-dismiss="alert">×</a> <h4 class="alert-heading">Warning!</h4> What are you doing?! this will delete all files!! </div> </div> </div> </div> <script src="/jscss/bootstrap/v3/jquery.js"></script> <script src="/jscss/bootstrap/v3/bootstrap-alert.js"></script> </body> </html>
运行结果