How do I export contents between xml tags based on names in Extendscript for Indesign? - adobe-indesign

Question

All I'd like to do here is open an InDesign 2018 CC file, pull out text uniquely (here I've chosen to grab content inside XML tag called "Title" from named tag window in the InDesign application side), save it to a txt file, and close the InDesign doc. I'm working in the Extendscript app, using Adobe InDesign CC 2018 (13.064). I just need to push to a txt file only certain named data (textboxes, xmltags, pageitems, etc) the contents based on anything, but via the name of the data holder. But xmltags are the only objects that I can name in the InDesign app apart from layers, and layers won't work for other reasons. So I'm stuck not being able to refer to xml-tagged contents. Please help.
Note:
I get an error with this code saying "Title" isn't defined, and I understand the error, but not sure how to utilize the method XML.toString() without referring to an object that's named inside the InDesign file. So I guess I'm using the wrong method to refer to xml-tagged data already located in a file??
So naturally, I throw out XML.toString() and utilize the commented out code (below) "app.activeDocument.xmlItems.item;" thinking maybe I will get an array of all items that are xml tagged, which is not even specific enough for my goal, but I'm desperate, and I get another newer error regarding the "exportfile" line of code: myArticles.exportFile() is not a function.
My code so far:
app.open(File("C:/Users/Sean/Desktop/New folder/va tech 2.indd"), true);
myArticles = Title.toString();
//THIS ATTEMPT WON'T WORK EITHER AS RPLCMNT FOR LINE ABOVE: myArticles= app.activeDocument.xmlItems.item;
myArticles.exportFile(ExportFormat.textType, new File("/C/Users/Sean/Desktop/New folder/test.txt"), false);
app.documents.everyItem().close(SaveOptions.NO);

Answer 1

var main = function() {
var doc, root, xes, n, nXE, st, xc, strs = [],
f = File ( Folder.desktop+"/contents.txt" );
try {
//NEED TO CHANGE THE URL. Ex: some/url > /Users/user/Desktop/foo.indd
doc = app.open ( File ( "some/url" ) );
}
catch(err){
alert(err.message);
return;
}
if ( !doc ) {
alert("You need an open document" );
return;
}
root = doc.xmlElements[0];
xes = root.evaluateXPathExpression("//Title");
n = xes.length;
while ( n-- ) {
nXE = xes[n];
xc = nXE.xmlContent;
if ( xc instanceof Story ) {
strs.push( xc.contents );
}
}
if ( strs.length ) {
f.open('w');
f.write ( strs.reverse().join("\r") );
f.close();
}
}
var u;
app.doScript ( "main()",u,u,UndoModes.ENTIRE_SCRIPT, "The Script" );