Problem with XMLHttpRequest.responseXML

[robezy]

Hi,

I'm pulling my hair for some time with this problem today. Will greatly appreciate if some one could provide me a solution.

I'm using ajax to get a list of categories to be populated in a dropdown.

My main code is below.

function makeRequest() {

                if (window.ActiveXObject)
                        return new ActiveXObject("Microsoft.XMLHTTP");
                else if (window.XMLHttpRequest)
                        return new XMLHttpRequest();
                else {
                        alert("Your browser does not support AJAX.");
                return null;
                }

}



 var http = makeRequest();

 function sendRequest(url, callbackfn) {
         http.open('get', url);
         http.onreadystatechange = callbackfn;
         http.send( null );
 }

Problem is in the next section of code.

var response = http.responseXML;
var row = response.getElementsByTagName('topic');

This works fine in FF, Opera, Safari, Chrome showing the dependable dropdowns, but not in IE. the row is empty when checked in ie.

when i do an alert

alert(row.length);

i get zero as length. i have no clue why the length becomes zero. IE shows no error message also.

the xml returned by the php script is given below.

<?xml version="1.0"?>
<topics>
  <topic id="1" title="Arithmetic"/>
  <topic id="2" title="Algebra"/>
  <topic id="3" title="Geometry"/>
  <topic id="4" title="Word Problems"/>
  <topic id="5" title="Miscellaneous"/>
</topics>

please give me some advice

[RamananKalirajan]

Are you getting the xml when you aler the variable "response" ?

Thanks and Regards
Ramanan Kalirajan

[robezy]

try {
var response = http.responseXM L;
alert(response) ;
var row = response.getEle mentsByTagName( 'topic');
} catch(exception ) {
alert('An execption occured.' + exception.messa ge);
}

In ie i'm getting an alert window showing [object]..

Can anybody give a clue....

thanks

[robezy]

var response = http.responseText;
alert(response);

will show me the xml file.

var response = http.responseXML;
alert(response);

gives [object] as o/p..

thanks..
Robert