模态框(Modal)是覆盖在父窗体上的子窗体。通常，其目的是显示来自一个单独源的内容，可以在不离开父窗体的情况下进行一些交互，子窗体提供一些交互或信息。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Bootstrap历练实例：模态框(Modal)插件</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<link rel="stylesheet" href="bootstrap-3.3.5-dist/css/bootstrap.min.css" />
</head>
<body>
<h2>创建模态框(Modal)</h2>
<!--按钮触发模态框-->
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">开始演示模态框</button>
<!--模态框(Modal)-->
<div class="modal fade"id="myModal" tabindex="-1"role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">
×
</button>
<h4 class="modal-title" id="myModalLabel">模态框(Modal)标题</h4>
</div>
<div class="modal-body">在这里添加一些文本</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal" aria-hidden="true">关闭</button>
<button type="button" class="btn btn-primary">提交更改</button>
</div>
</div>
</div>
</div>
<script src="jQuery/jquery-2.1.4.js"></script>
<script src="bootstrap-3.3.5-dist/js/bootstrap.min.js"></script>
</body>
</html>