ajax code for combo box(list box)

[aswath]

hi dere,

i'm new to ajax.. i did a small example using it successfully.. but the problem i'm facing is, how to display the data in a combo box.. if i know the no.of values that is coming from db i can do it, however i don know the no.of records in db..

to be more simple, if i select a country, corr.states of that country should come..
below is the code i used to dispaly if i kno the no.of records in the db

function ajaxFunction()
{
var xmlHttp;
try
  {  // Firefox, Opera 8.0+, Safari 
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {  // Internet Explorer  
  try
    {    
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");  
    }
  catch (e)
    {   
    try
      {     
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");   
      }
    catch (e)
      {    
      alert("Your browser does not support AJAX!");   
      return false;    
      } 
      } 
      }
  xmlHttp.onreadystatechange=function()
    {
    if(xmlHttp.readyState==4)
      {
      var array;
      array=xmlHttp.responseText.split("|")
      document.form2.contact.value=array[0];
      document.form2.address.value=array[1];
      document.form2.city.value=array[2];
      document.form2.country.value=array[3];
      }
    }
    var user= document.form2.user.value
    var url = "aswajax?user=" + user;
  xmlHttp.open("GET",url,true);
  xmlHttp.send();  }

any help..
thanks in advance..
regards,
aswathn.s
(knowledge is power

[acoder]

Either use XML or JSON, or after splitting, use a for loop to loop over the data. That way you don't need to know the number of records.