<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>模态框</title>
<link rel="stylesheet" type="text/css" href="/cdn.bootcss.com/bootstrap/3.3.2/css/bootstrap.min.css" />
</head>
<body>
<div id="myModal" class="modal fade" tabindex="-1" role="dialog">
<div 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">Modal title</h4>
</div>
<div class="modal-body">
<p>One fine body…</p>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-primary" data-dismiss="modal">确认</button>
<button type="button" class="btn btn-default" data-dismiss="modal">取消</button>
</div>
</div><!-- /.modal-content -->
</div><!-- /.modal-dialog -->
</div><!-- /.modal -->
<button type="button" class="btn" data-toggle="modal" data-target="#myModal">open modal</button>
<!-- 基础的Jquery -->
<script type="text/javascript" src="/cdn.bootcss.com/jquery/3.3.1/jquery.min.js" ></script>
<!-- 基础的bootstrap -->
<script type="text/javascript" src="/cdn.bootcss.com/bootstrap/3.3.2/js/bootstrap.min.js" ></script>
<script type="text/javascript">
$(function(){
// $("#myModal").modal('show');
});
</script>
</body>
</html>bootstrap和jQuery下载地址：