jQuery的选择器真的好强大，好灵活。 javascript的原始方法也值得研究。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CheckBoxList.aspx.cs" Inherits="CheckBoxList" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>获得CheckBoxList选中的数量(jQuery与Javascript对照学习/前台与后台)</title>
<script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
<script type="text/javascript">
//jQuery的方法(王君)
$(function(){
$("#chkBox").click(function(){
alert($("#chkBox input[@type=checkbox]:checked").size());
});
});
//javacript方法(候林)
function f(){
var a=document.getElementsByTagName('input')
var num=0;
for(var i=0;i<a.length;i++){
if(a[i].type=='checkbox'){
if(a[i].checked==true)
num+=1;
}
}
alert(num);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
jQuery的选择器真的好强大，好灵活。<br />
javascript的原始方法也值得研究。
</div>
<div>
<input type="button" value="Javascript取值" onclick="f();" />
<asp:CheckBoxList ID="chkBox" runat="server">
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
</asp:CheckBoxList>
<asp:Button ID="btnOk" runat="server" OnClick="btnOk_Click" Text="服务器端取" />
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class CheckBoxList : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnOk_Click(object sender, EventArgs e)
{
int totalNum = 0;//总数
string list = "000";//选中的值
for (int i = 0; i < this.chkBox.Items.Count; i++)
{
if (chkBox.Items[i].Selected)
{
totalNum += 1;
list += "," + chkBox.Items[i].Value;
}
}
Response.Write(totalNum.ToString() + "|" + list);
}
}