js获取checkboxlist的值

来源：互联网发布：高通wifi 写入mac工具编辑：程序博客网时间：2024/04/26 04:47

文章应用自互联网http://hi.baidu.com/suzhipeng921/blog/item/23d0dfc51ea082c238db4926.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 Default3 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            BindChkList();
        }

    }
     private void BindChkList()
    {
        chkProjStatus.Items.Add(new ListItem("项目前期", "505004"));
        chkProjStatus.Items.Add(new ListItem("项目进行中", "505001"));
        chkProjStatus.Items.Add(new ListItem("项目中期", "505003"));
        chkProjStatus.Items.Add(new ListItem("项目后期", "505005"));
        chkProjStatus.Items.Add(new ListItem("项目结束", "505002"));
        chkProjStatus.Items.Add(new ListItem("项目意外中止", "505006"));//这里您可以绑定数据库里的数据

        string checkListValue = "";
        string checkListText = "";
        for (int i = 0; i < chkProjStatus.Items.Count; i++)
        {
            checkListValue += chkProjStatus.Items[i].Value + ",";
            checkListText += chkProjStatus.Items[i].Text + ",";
        }
        checkListText = checkListText.TrimEnd(',');
        checkListValue = checkListValue.TrimEnd(',');

        //由于checkboxlist在前台html页面表现中没有value属性，导致js无法获取选种的value值
        //这里用程序来添加value和text属性
        chkProjStatus.Attributes["ListValue"] = checkListValue;
        chkProjStatus.Attributes["ListText"] = checkListText;
    }

}

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>

<!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>无标题页</title>
    <script language=javascript>

    function CheckValue()
         {
            //在JS端调用CheckBoxList
             var chkObject = document.getElementById('<%=chkProjStatus.ClientID%>');
             var chkInput =chkObject.getElementsByTagName("INPUT");
             var arrListValue = chkObject.ListValue.split(',');
             var count = arrListValue.length;
             var strCheckChecked = "";
             var arrCheckChecked;
             var chkValue = "";

//每次点击CheckBoxList的一个Item，都循环把所有Item的选中状态按0、1标志，存入一个变量，最后再根据这个标志来决定checkboxlist中要取的值

                for (var i=0; i< chkInput.length; i++)
                {
                    if(chkInput[i].checked)
                    {
                        strCheckChecked = strCheckChecked + "1" + ",";
                    }
                    else
                    {
                        strCheckChecked = strCheckChecked + "0" + ",";
                    }
               }
                arrCheckChecked = RTrim(strCheckChecked).split(',');
                 for(var j = 0; j < count; j++)
                 {
                     if(arrCheckChecked[j] == "1")
                     {
                         chkValue += arrListValue[j] +",";
                     }
                 }
                 chkValue = RTrim(chkValue);
                 alert(chkValue);

         }

        //如果有则移除末尾的逗号
        function RTrim(str)
        {
            if(str.charAt(str.length-1)==",")
               return str.substring(0,str.length-1);
            else
               return str;
        }

    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:CheckBoxList ID="chkProjStatus" runat="server">
        </asp:CheckBoxList></div>
        <input type=button onclick="CheckValue()" value="test"/>
    </form>
</body>
</html>