Ajax Calls not refereshed.

[carina caoor]

Hi i have a form with certain input fields,radio buttons and submit buttons when i select a radio button value then the input fields get populated, on clicking update button the input fields data can be modified & when user inputs value it get updated in the database on click of submit button

 
<input type=text id=sacode onfocus="getPlotnumbers();" READONLY>
<button type=submit  ID=SEARCHAREACODE title="SEARCH AREACODE" ONClK='popupon()'>
</button>
<DIV ID=l2 READONLY></DIV>
<FORM NAME=getdetails method=post>
Plot No:-<input  ID=l4 type=text name=plotno>
MuncipalityPlot No:-<input  ID=l6  type=text name=Mplotno>
<button type="button"  ID=l21 onclk="updateplot();" >UpdatePlot</button>
 

and my javascript code is

 
function getPlotnumbers()
{
createXmlHttpRequest();  
//alert("inside get plotnumbers");
var u1=document.createplotform.sacode.value;
//alert(u1);
 
  xmlHttp.open("GET","http://localhost:8080/MyPlots/GetPlotnumbers?areacode="+u1,true);
  xmlHttp.onreadystatechange=handleGetPlotnumbers;
  xmlHttp.send(null);
 
}  
 
 function handleGetPlotnumbers()
 {
 
 //alert("inside handleGetPlotnumbers");
    if(xmlHttp.readyState==4)
    {
      var zeTable = "<table>"; 
        if(xmlHttp.status==200)
            {
 
var alength=xmlHttp.responseXML.getElementsByTagName("plotno");

    for(i=0;i<alength.length;i++)
     {
        var message= new Array(alength.length);
        message[i] = xmlHttp.responseXML.getElementsByTagName("plotno")[i].childNodes[0].nodeValue;
         zeTable =zeTable+"<tr><td><input type='radio' name='plotnoradio' onclk='getDetailInfo();' onfocus='getDetailInfo();' value='"+message[i]+"'>"+message[i]+"</td></tr>";               
    //alert("Response Generated\n"+i+" "+message[i]);

 
  
           
   }
     zeTable=zeTable+"</table>"; 
     document.getElementById('l2').innerHTML=zeTable;

 
 //checked by default and the get the values on load
 if(true)
   {
           document.createplotform.plotnoradio[0].checked=true;
   document.createplotform.plotnoradio[0].focus();
   }
   }
    
    
else
        {
           alert("Error loading page"+ xmlHttp.status +
               ":"+xmlHttp.statusText);
        }
        
      
    }    
function updateplot()
{
 
//alert("inside  update");
var areacode=document.createplotform.sacode.value;
var plotnumber=document.getdetails.l4.value;
var muncipalitypno=document.getdetails.l6.value;
alert("update");
document.getElementById('iframetag').src = "http://localhost:8080/MyPlots/AddNewPlot?areacode="+areacode+"&plotnumber="+plotnumber+"&muncipalitypno="+muncipalitypno
 
getPlotnumbers();
}
 
 

after inserting new data i am calling getPlotnumbers again here the servlet which i am calling is not getting called and it is not requering from the database to get the updated value it still shows me the old value not the refreshed one.
Anybody please help me out with this.
[ September 10, 2008: Message edited by: ruquia tabassum ]

[Eric Pascarello]

GETS are made to be cached.

If you insist on using GET, put this after your open call:

xmlHttp.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT"); 

Eric

[Bear Bibeault]

Please be sure to use UBB code tags when posting code to the forums. Unformatted code is extremely hard to read and many people that might be able to help you will just move along to posts that are easier to read. Please read this for more information.

You can go back and change your post to add code tags by clicking the .

[carina caoor]

I added the code but still the get request is getting cached and its not presenting the refreshed data, i managed to add new Date().getSeconds() at the end of the servlet url but still the gets are cached, please suggest me something, or my code is wrong somewhere?

 
 var rand=new Date().getSeconds();    
  xmlHttp.open("GET","http://localhost:8080/MyPlots/GetPlotnumbers?areacode="+u1+"&yygghh="+rand,true);
  xmlHttp.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT"); 
  xmlHttp.onreadystatechange=handleGetPlotnumbers;
  xmlHttp.send(null);
 

[Eric Pascarello]

Did you clear your cache on your browser to make sure you have the newest code. Are you setting no-cache headers on the page that you are requesting.

Eric