Ajax doubt

[Nithu25]

Hi All,

I don't know much about Ajax.I am facing some problem while using Ajax along with JSP.

From one jsp file, one function named "addtoColle ct" is called which is written in a js file, which is written using Ajax. From there it is redirected to a jsp file called "addtocol.j sp". First time when the function is called it works fine. After that again on calling the same function for same imageid , from the js, it is not getting redirected to the "addtocol.j sp".


I am not able to find out what is the problem.

Here is the code:



[code=javascript]

var xmlHttp;
var divid;


function AddtoCollection (id, userid,stit)
{
var user = userid;
var imageid = id;
xmlHttp=GetXmlH ttpObject();
if (xmlHttp==null)
{
alert ("Your browser does not support AJAX!");
return;
}

var url="addtocol.j sp";
url=url+"?imgid ="+imageid+"&ui d="+user;
divid = stit;
xmlHttp.onready statechange=sta teChanged;
xmlHttp.open("G ET",url,true) ;
xmlHttp.send(nu ll);
xmlHttp.close;
}
//}

function stateChanged()
{
if (xmlHttp.readyS tate==4)
{
var bdivid = "bc" + divid;
var adivid = "ac" + divid;
//document.getEle mentById("txtHi nt").innerHTML= xmlHttp.respons eText;
document.getEle mentById(bdivid ).style.display = "none";
document.getEle mentById(adivid ).style.display = "block";
alert ("'"+divid+" ' Added To Collection");
}
}

function GetXmlHttpObjec t()
{
var xmlHttp=null;
try
{
// Firefox, Opera 8.0+, Safari
xmlHttp=new XMLHttpRequest( );
}
catch (e)
{
// Internet Explorer
try
{
xmlHttp=new ActiveXObject(" Msxml2.XMLHTTP" );
}
catch (e)
{
xmlHttp=new ActiveXObject(" Microsoft.XMLHT TP");
}
}
return xmlHttp;
}

[/code]


Here the parameters--imageid is the id of the image, userid ..id of the user and stit is the imagename.

This problem is only if i use same imageid and same userid again.If i am adding one imageid then this function will be called and it redirects to addtocol.jsp and works fine. But after that if i am removing that from collection and again adding the same image id (ie, when this function is called), it is not redirecting to addtocol.jsp.Th is works fine in Firefox , but not in IE.

[acoder]

IE is probably caching the requests. Add the time to each request to make it unique, e.g. url=url+"?imgid ="+imageid+"&ui d="+user+"&rnd= "+new Date().getTime( );