Simple AJAX with xml

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hey. I'm trying to get a grasp on XML for use with AJAX.
here is my code. what i want to do is grab the stuff between the 'content' tags, and display it. then i want to take the stuff between the 'script' tags, and eval it (so it will execute).

here is my simple xml document:

JavaScript / DHTML / AJAX Syntax (Toggle Plain Text)
<?xml version="1.0" encoding="ISO-8859-1"?>
<document>
<myScript> alert("hello world"); </myScript>
<content> This text should be displayed as content. </content>
</document>
<?xml version="1.0" encoding="ISO-8859-1"?>
<document>
<myScript> alert("hello world"); </myScript>
<content> This text should be displayed as content. </content>
</document>

and my handleResponse code from the calling page:

JavaScript / DHTML / AJAX Syntax (Toggle Plain Text)
function handleResponse(http_request, divID){
   var myDiv = document.getElementById(divID);
   if (http_request.readyState == 4) {
      if (http_request.status == 200) {
          myXMLDoc = http_request.responseXML;
          content = myXMLDoc.getElementsByTagName("content");
          myDiv.innerHTML = content; 
   } else {
   alert("There was a problem with the request.");
  }
 }
}
function handleResponse(http_request, divID){
   var myDiv = document.getElementById(divID);
   if (http_request.readyState == 4) {
      if (http_request.status == 200) {
          myXMLDoc = http_request.responseXML;
          content = myXMLDoc.getElementsByTagName("content");
          myDiv.innerHTML = content; 
   } else {
   alert("There was a problem with the request.");
  }
 }
}

When i run this, i get the error "object doesn't support this property or method" ... and its complaining about the line :
content = myXMLDoc.getElementsByTagName("content");

Can anybody see what I'm doing wrong, and possibly suggest how to fix it? I'm just getting into XML, and it would be a big help
Thanks!

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AndrewSmith

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Aug 27th, 2006

Re: Simple AJAX with xml

Your getting that error because that property does not exist on the XML document.

You must first parse the document before you can access the DOM. Once you do this your code should work.

Here is some info on parsing an XML document: http://www.w3schools.com/dom/dom_parser.asp

Sailor_Jerry

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