XML parser and javascript function

Hi folks,

Me again. More problems.

I have a fairly complex xml document which looks like this:

<my:InsideView xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2004-08-02T14:22:59" xml:lang="en-us">
<my:Title>Title in here</my:Title>
<my:StandFirst>Standfirst in here</my:StandFirst>
<my:RelatedMaterial>
<my:Image>/images/InsideView/norma.gif</my:Image>
<my:EmphasisedText>picture of norma</my:EmphasisedText>
<my:AlternateText>alternate text</my:AlternateText>
<my:PlaceHolderTag><!-- image one --></my:PlaceHolderTag>
</my:RelatedMaterial>
<my:RelatedMaterial>
<my:Image>/images/InsideView/elena.gif</my:Image>
<my:EmphasisedText>another picture of elena</my:EmphasisedText>
<my:AlternateText></my:AlternateText>
<my:PlaceHolderTag><!-- image two --></my:PlaceHolderTag>
</my:RelatedMaterial>
<my:Body>Main body text for newsletter. I want to place image one in here so I will use a placeholder, like this <!-- image one --> to search and replace any of these tags with the image in <my:image></my:Body>
<my:RelatedLinks>
<my:URL>http://www.google.com</my:URL>
<my:URLText>this is a link to google</my:URLText>
</my:RelatedLinks>
<my:RelatedLinks>
<my:URL>http://www.bbc.co.uk</my:URL>
<my:URLText>this is a link to </my:URLText>
</my:RelatedLinks>
</my:InsideView>

I am want to use my javascript function to load the XML document and work with the nodes within the document. My aim is to be able to loop through the <RelatedMaterial> node, and see if any of the tags placed in <my:PlaceHolderTag> can be found in the content within <my:Body>. If a placeholder is found, then I want to replace the placeholder in <my:Body> with the image in <my:image>.

Quite an ambitious task. Can anybody tell me what is wrong with my javascript function:

function loadXML(xmlDoc, divName) {

var display;
var xmldoc = new ActiveXObject("Microsoft.XMLDOM");
xmldoc.async = false;
xmldoc.load(xmlDoc);

strBody = xmldoc.getElementsByTagName("Body");

alert(strBody.length); // DISPLAYS 0

alert(strBody[0].firstChild.nodeValue); // error: object expected

myNodes = _XML.getElementsByTagName("RelatedMaterial");

alert(myNodes.length) // displays 0

//Extract the different values using a loop.
for( var counter = 0; counter < myNodes.length; counter++ ) {
display += myNodes.item(counter).firstChild.nodeValue + "\n";
}
alert(display) // error: undefined

document.all.main.innerHTML = display;
}

just wondering.. I haven't faced a similar issue (although JS & XMLDOM gave me some troubles), but when you use

strBody = xmldoc.getElementsByTagName("Body");

Shouldn't you be using the namespace as well ? (my:Body)

You first alert() returning a 0 is what you have to fix before trying to go any further. The rest seems ok. What you can also do is an alert right after xmldoc.load(xmlDoc);

This will show you exactly how the file has been loaded, and if the system is using tag names with or without namespaces.

Try this, and let me know if you need more help

Grtz

Hi there!

Many thanks for your comments.

You are right: I do need to reference the namespace (ie my:Body) which I discovered soon after posting the problem. Thanks for pointing this out!

I am still having aproblem with the second part of the function, but I will carry on working at it and post any problems once I've tried everything else I can think of.

Once again, you've come through for me. THANKS