checkboxList的js去value变通方法

//把checkboxlist值付给 textbox
function confirm(partId)
{
    //alert(partId)
    //在JS端调用CheckBoxList
     var dvobj =  $('dv'+partId);
     var chkInput =$('ctl00_ContentPlaceHolder1_chbList'+partId).getElementsByTagName("INPUT");   
     //var arrListValue = $('ctl00_ContentPlaceHolder1_chbList'+partId).ListValue.split(',');
     var arrListText = $('ctl00_ContentPlaceHolder1_chbList'+partId).ListText.split(',');
     var count = arrListText.length;
     var strCheckChecked = ""; 
     var arrCheckChecked;
     //var chkValue = "";
     var chkText = "";            
     //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 < arrCheckChecked.length; j++)
     {
         if(arrCheckChecked[j] == "1")
             //chkValue += arrListValue[j] +",";
             chkText += arrListText[j] +",";
     }
     $('ctl00_ContentPlaceHolder1_txt'+partId).value =  RTrim(chkText,',');
     $('ctl00_ContentPlaceHolder1_txt'+partId).title = RTrim(chkText,',');
     dvobj.hide();
   
}

-------------------------------.cs-----------------------------------
            string checkListValue = "";
            string checkListText = "";

            foreach (ListItem li in cbl.Items)
            {
                checkListValue += li.Value + ",";
                checkListText += li.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
            cbl.Attributes["ListValue"] = checkListValue;
            cbl.Attributes["ListText"] = checkListText;