Use Javascript to assemble a XML file?

[TPK]

Is there any way javascript can be used to assemble a XML file?

Any resources out there that may explain how to do this (if possible)?

TPK

[Julian Turner]

Re: Use Javascript to assemble a XML file?


TPK wrote:

Is there any way javascript can be used to assemble a XML file?
>
Any resources out there that may explain how to do this (if possible)?
>
TPK

Hi

The answer is yes.

JavaScript generally has no native XML handling (although there is an
extension to Firefox which implements E4X I think :
<URL:http://www.ecma-international.o rg/publications/standards/Ecma-357.htm>)

However, the latest web browsers all provide a host objects/ActiveX
objects which Javascript can access to create XML documents.

If I type in "Javascript and XML" in google, I get approximately 34
million responses, and there are probably just as many posts on the
subject if you search this newsgroup. I suggest you start by doing
some searching and following up a few of those yourself.

The cross-browser Sarissa Javascript library is also useful to look at,
or the zXML library provided by <URL:http://www.nczonline.n et>.

Regards

Julian Turner

[Martin Honnen]

Re: Use Javascript to assemble a XML file?

TPK wrote:

Is there any way javascript can be used to assemble a XML file?
>
Any resources out there that may explain how to do this (if possible)?

You can use the DOM to build an in memory XML DOM document. Saving to a
local file is usually (meaning in the browser sandbox) not possible but
you can use XMLHttpRequest so send such a DOM document to your server.

var xmlDocument = null;

if (document.imple mentation && typeof
document.implem entation.create Document != 'undefined') {
xmlDocument = document.implem entation.create Document('', 'dummy', null);
}
else if (typeof ActiveXObject != 'undefined') {
try {
xmlDocument = new ActiveXObject(' Msxml2.DOMDocum ent');
}
catch (e) {
try {
xmlDocument = new ActiveXObject(' Microsoft.XMLDO M');
}
catch (e) {}
}
}

if (xmlDocument != null) {
var root = xmlDocument.cre ateElement('god s');
if (xmlDocument.do cumentElement) {
xmlDocument.rep laceChild(root, xmlDocument.doc umentElement);
}
else {
xmlDocument.app endChild(root);
}
var god = xmlDocument.cre ateElement('god ');
god.appendChild (xmlDocument.cr eateTextNode('K ibo'));
root.appendChil d(god);
if (typeof XMLSerializer != 'undefined') {
alert(new XMLSerializer() .serializeToStr ing(xmlDocument ));
}
else {
alert(xmlDocume nt.xml);
}
}

createDocument is W3C DOM Level 2 Core to create an XML DOM document.
That method wants the tag name (and namespace) of the root element so
the newly created document has already a root element. The method is
supported by browsers like Mozilla/Firefox, Opera 8/9.
new ActiveXObject(' Msxml2.DOMDocum ent') (respectively new
ActiveXObject(' Microsoft.XMLDO M')) is for IE/Win using MSXML to create
an XML DOM document which is empty.

--

Martin Honnen

http://JavaScript.FAQTs.com/