请自行下载使用到的Bootstrap库及jQuery库
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<link href="bootstrap.min.css" media="screen" rel="stylesheet">
</head>
<body>
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
打开示例对话框
</button>
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div id="modalDialog" class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">可拖动窗口</h4>
</div>
<div class="modal-body">
按住左键开始拖动吧
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
</div>
</div>
</div>
</div>
<script src="jquery-1.11.2.min.js"></script>
<script src="jquery-ui.min.js"></script><!--用户拖动元素，链接：http://api.jqueryui.com/draggable/#method-disable/-->
<script src="jquery.ui.touch-punch.min.js"></script><!--移动设备用户拖动元素，依赖juery-ui.min.js，链接：http://touchpunch.furf.com/-->
<script src="bootstrap.min.js"></script>
<script>
$(document).ready(function(){
$("#modalDialog").draggable();//为模态对话框添加拖拽
$("#myModal").css("overflow", "hidden");//禁止模态对话框的半透明背景滚动
})
</script>
</body>
</html>