Creating XML nodes via DOM

[mercattor]

Hey, there!
Guys, Im in a sort of a... tag.
According to w3schools.com, in order to create nodes in XML, all one has to do is

xmlDoc=loadXMLDoc("archive.xml")//xml reader parser
var p_root=xmlDoc.getElementsByTagName("root") //XML archive's root
var new_element=xmlDoc.createElement("new_element")
var new_text=new_element.createTextNode("Text")
new_element.appendChild(new_text)

p_root.appendChild(new_element)

... And that should do it. But, and a very big But indeed, it doesn't create at all. No new elements in the XML document, no appending whatsoever.
AND, no help from the Mozilla's Error Console (ctrl+alt+j) either.
Any clues?

[reedy837]

Generally you would need to save the document in some form to see the changes, unless, for example, it is being run from javascript and modifying the current HTML page.
Hope that helps...

[mercattor]

Yes, wel... The data *are* being processed via HTML Form, with no server-side client (sucha as Asp), wihch, I have to say, I'm inclined to change.
When you say "save in a document", you mean, by server applications, right?

[reedy837]

It was a general comment for XML, but in your case yes.

Basically, unless there is something which is representing a live version of the DOM you will not see any changes unless the DOM you are modifying is saved back to either the file that you loaded or a new file. When the DOM is modified using appendChild() etc. it is only amending the in memory version of the DOM.