判断复选框是否被选中的两种方法

复制代码 代码如下:

  <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

  <%

  String path = request.getContextPath();

  String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

  %>

  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

  <html>

  <head>

  <base href="<%=basePath%>">

  <title>My JSP 'checkbox.jsp' starting page</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">

  <script type="text/javascript" src="<%=request.getContextPath() %>/jquery/jquery-1.7.min.js"></script>

  <!--

  <link rel="stylesheet" type="text/css" href="styles.css">

  -->

  <script type="text/javascript">

  $(function(){

  //$("#box").click(function(){

  // if ($("#box").attr("checked")=="checked") {

  // alert("ss");

  // }

  //})

  if ($("#box").is(":checked")) {

  alert("df");

  }

  })

  </script>

  </head>

  <body>

  <input type="checkbox" id="box" checked="checked">

  </body>

  </html>