1 index10.css
@CHARSET "UTF-8";
.selected{
background: red;  
}
2 index10.jsp
<%@  page language="java" import="java.util.*"pageEncoding="UTF-8"%>
<%
Stringpath = request.getContextPath();
StringbasePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC  "-//W3C//DTDHTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index4.jsp' startingpage</title>
<meta http-equiv="pragma"content="no-cache">
<meta http-equiv="cache-control"content="no-cache">
<meta http-equiv="expires"content="0">
<meta http-equiv="keywords"content="keyword1,keyword2,keyword3">
<meta http-equiv="description"content="This is my page">
<link rel="stylesheet"type="text/css" href="css/index10.css">
<script type="text/javascript"src="plug/jquery.js"></script>
</head>
<body>
<table border="1">
<tr>
<td><input type="radio"name="radioButton" value="radioButton">小明</td>
</tr>
</table>
<script type="text/javascript">
    $(function() {
"tr").click(function() {
       $(this).addClass("selected");
       });
   });
</script>
</body>
</html>

运行效果如下：

按钮样式的添加_按钮样式的添加