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警告(Alerts)向用户提供了一种定义消息样式的方式。它们为典型的用户操作提供了上下文信息反馈。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width = device-width,initial-scale = 1.0">
<link rel="stylesheet" href="bootstrap.min.css">
<script src = "js/jquery-1.11.2.min.js"></script>
<script src = "js/bootstrap.min.js"></script>
<title>CSSDemo</title>
</head>
<body>
<div class="container">
<div class="col-lg-3">
<div class="alert alert-success">成功信息。</div>
<div class="alert alert-info">提示信息。</div>
<div class="alert alert-warning">警告信息。</div>
<div class="alert alert-danger">错误信息。</div>
</div>
</div>
</body>
</html>
创建一个可取消的警告(Dismissal Alert)步骤如下:
<body>
<div class="container">
<div class="col-lg-3">
<div class="alert alert-success alert-dismissable">成功信息。
<button type="button" class="close" data-dismiss = "alert" aria-hidden="false">×</button>
</div>
<div class="alert alert-info">提示信息。
<button type="button" class="close" data-dismiss = "alert" aria-hidden="true">×</button>
</div>
<div class="alert alert-warning">警告信息。</div>
<div class="alert alert-danger">错误信息。</div>
</div>
</div>
</body>
<body>
<div class="container">
<div class="col-lg-3">
<div class="alert alert-success alert-dismissable">
<a href="#" class="alert-link">成功信息。</a>
<button type="button" class="close" data-dismiss = "alert" aria-hidden="false">×</button>
</div>
<div class="alert alert-info">
<a href="#" class="alert-link">提示信息。</a>
<button type="button" class="close" data-dismiss = "alert" aria-hidden="true">×</button>
</div>
<div class="alert alert-warning">
<a href="#" class="alert-link">警告信息。</a>
</div>
<div class="alert alert-danger">
<a href="#" class="alert-link">错误信息。</a>
</div>
</div>
</div>
</body>.alert .alert-link的font-weight:700,因此可以看出字体有加粗
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原文地址:http://blog.csdn.net/liuyan19891230/article/details/50540347