Develop Reference

tvOS not loading external TVML file

While creating a new Client-Server tvOS App, tvOS will not get the data from my external tvml file. This is the Error: ITML <Error>: Failed to load launch URL with error: (null)
This is the main.js code
function getDocument(url) {
var templateXHR = new XMLHttpRequest();
templateXHR.responseType = "document";
templateXHR.addEventListener("load", function() {pushDoc(templateXHR.responseXML);}, false);
templateXHR.open("GET", url, true);
templateXHR.send();
return templateXHR;
}
function pushDoc(document) {
navigationDocument.pushDocument(document);
}
App.onLaunch = function(options) {
var templateURL = 'niclasblog.com/appletv/main.tvml';
getDocument(templateURL);
}
App.onExit = function() {
console.log('App finished');
}
And I have attached the main.tvml file as well
<document>
<alertTemplate>
<title>Test</title>
<description>This is a test</description>
<button>
<text>Yes</text>
</button>
<button>
<text>No</text>
</button>
</alertTemplate>
</document>
That code is directly from the Apple Documentation, so I do not know why it is not working.

In your App.onLaunch function you could get the BASEURL and use this for loading all your assets:
App.onLaunch = function(options) {
var BASEURL = options.BASEURL;
// etc.
}
You can also consider a different approach to loading templates. Consider using a DOMParser to parse an XML String. This way you can write Multiline template strings with "real" content e.g.
getDocument(options) {
let parser = new DOMParser();
let templateString = `<?xml version="1.0" encoding="UTF-8" ?>
<document>
<alertTemplate>
<description>${options.translate.errorRandomErrorAlertText}</description>
<button>
<text>${options.translate.utilOk}/text>
</button>
</alertTemplate>
</document>`;
return parser.parseFromString(templateString, "application/xml");
}
I've written a generator for specfically for Apple TVML apps using es6, its still early in its development, but might help you get started.

Try replacing this
var templateURL = 'niclasblog.com/appletv/main.tvml';
with fully qualified URI
var templateURL = 'https://niclasblog.com/appletv/main.tvml';
Also
templateXHR.responseType = "document";
is not needed as that seem to be the default behavior.

AJAX Error when attempting to read xml file

I'm trying to retrieve some data from an xml file using ajax
<?xml version="1.0" encoding=UTF-8"?>
<user>
<u_idno>1</u_idno>
<u_name>nobody</u_name>
<u_srnm>nothing</u_srnm>
<u_role>linux</u_role>
</user>
<user>
<u_idno>2</u_idno>
<u_name>yesbody</u_name>
<u_srnm>something</u_srnm>
<u_role>administrator</u_role>
</user>
but I am getting an error
Uncaught TypeError: Cannot read property 'getElementsByTagName' of null
I am unsure why it would say null and I've been googling furiously to find out what I've done wrong but I'm clueless. My javascript is as followed
function f_ajax() {
var lv_request;
try {
lv_request = new XMLHttpRequest();
} catch (error) {
lv_request = new ActiveXObject("Microsoft.XMLHTTP");
}
lv_request.onreadystatechange = function() {
if(lv_request.readyState == 4 && lv_request.status == 200) {
lv_xml = lv_request.responseXML;
lv_row = lv_xml.getElementsByTagName("user");
lv_output = null;
for (lv_cnt = 0; lv_cnt < lv_row.length; lv_cnt++) {
lv_output = lv_output + lv_row[lv_cnt].childNodes[0].nodeValue;
}
document.getElementById("h2_ajax").innerHTML = lv_row;
}
}
lv_request.open("GET", "data.xml", true);
lv_request.send();
};
f_ajax();

Your XML is not well formed. It is missing a root and has some other issues. Try this:
<?xml version="1.0" encoding="UTF-8"?>
<root>
<user>
<u_idno>1</u_idno>
<u_name>nobody</u_name>
<u_srnm>nothing</u_srnm>
<u_role>linux</u_role>
</user>
<user>
<u_idno>2</u_idno>
<u_name>yesbody</u_name>
<u_srnm>something</u_srnm>
<u_role>administrator</u_role>
</user>
</root>

responseXML is returning null

I am trying to parse xml data with javascript in ajax call.But responseXML is returning null value.Here is my code
<script language="javascript">
if(window.addEventListener)
{
window.addEventListener("load",getXML,false);
}
else if(window.attachEvent)
{
window.attachEvent("onload",getXML);
}
function getXML()
{
var xhr = new XMLHttpRequest();
xhr.open("GET","myxml.xml",true);
xhr.onreadystatechange = function()
{
if(xhr.readyState == 4)
{
//alert("got response");
var root = xhr.responseXML;
alert(root);
}
}
xhr.send(null);
}
</script>
Here is my "myxml.xml" file
<?xml version="1.0" encoding="iso-8859-1"?>
<root>
<child-1>
<grandChild1_1>textOfGrandChild1_1</grandchild1_1>
<grandChild2_1>textOfGrandChild2_1</grandchild2_1>
<grandChild3_1>textOfGrandChild3_1</grandchild3_1>
</child-1>
<child-2>
<grandChild1_2>textOfGrandChild1_2</grandchild1_2>
<grandChild2_2>textOfGrandChild2_2</grandchild2_2>
<grandChild3_2>textOfGrandChild3_2</grandchild3_2>
</child-2>
<child-3>
<grandChild1_3>textOfGrandChild1_3</grandchild1_3>
<grandChild2_3>textOfGrandChild2_3</grandchild2_3>
<grandChild3_3>textOfGrandChild3_3</grandchild3_3>
</child-3>
</root>
When I tried with
alert(xhr.responseText)
it showed the xml file as it is.But when using responseXML it is giving null value.Where is the problem?

Your XML is invalid, Case matters
<grandChild1_1>textOfGrandChild1_1</grandchild1_1>
^ ^
All the closing tags have the wrong camel case in the names.

Your XML was incorrect, beacuse it is case sensitive, changed grandchild1_1 to grandChild1_1 and it worked.
<?xml version="1.0" encoding="iso-8859-1"?>
<root>
<child-1>
<grandChild1_1>textOfGrandChild1_1</grandChild1_1>
<grandChild2_1>textOfGrandChild2_1</grandChild2_1>
<grandChild3_1>textOfGrandChild3_1</grandChild3_1>
</child-1>
<child-2>
<grandChild1_2>textOfGrandChild1_2</grandChild1_2>
<grandChild2_2>textOfGrandChild2_2</grandChild2_2>
<grandChild3_2>textOfGrandChild3_2</grandChild3_2>
</child-2>
<child-3>
<grandChild1_3>textOfGrandChild1_3</grandChild1_3>
<grandChild2_3>textOfGrandChild2_3</grandChild2_3>
<grandChild3_3>textOfGrandChild3_3</grandChild3_3>
</child-3>
Here is the Plunker
Thanks!

Load an xml file with javascript in XSLT

I am stuck at this. I have an XSLT file that uses an XML file to retrieve data from it.
IN this XSLT file is also a javascript. It's purpose is to create counters to the 'for each' statement in the XSLT.
Now I need to add a feature to the javascript that gets a specific entry from the XML file.
I will paste a part of the xml here so I can explain further.
<ROW>
<Date>03-12-2013</Date>
<School>SvR</School>
<Locale>B1.04</Locale>
<Class>1236VUGK16</Class>
<Time>09:00-16:00</Time>
</ROW>
I need to get the data from "Date". But I do not know how to load an xml file in javascript to achieve this. I've found some html codes that tell me to xmlDoc.load will do this, but it does not. It will give me a syntax error. Is this because it is in XSLT? How can I achieve what I want?

you need 4 things
data.xml -> XML file
Openxml.js -> contains funciton to open Javascript
filejs.js -> contains function to read/write and others things with data.
index.html -> show information
part 1, your xml file:
<?xml version="1.0" encoding="UTF-8"?>
<events>
<ROW>
<Date>03-12-2013</Date>
<School>SvR</School>
<Locale>B1.04</Locale>
<Class>1236VUGK16</Class>
<Time>09:00-16:00</Time>
</ROW>
</events>
part 2:
unction OpenFile(fichXML)
{
var xmlDoc=undefined;
try
{
if (document.all) //IE
{
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
}
else //firefox
{
xmlDoc = document.implementation.createDocument("","",null);
}
xmlDoc.async=false;
xmlDoc.load(fichXML);
}
catch(e)
{
try { //otros safari, chrome
var xmlhttp = new window.XMLHttpRequest();
xmlhttp.open("GET",fichXML,false);
xmlhttp.send(null);
xmlDoc = xmlhttp.responseXML.documentElement;
return xmlDoc;
}
catch (e)
{
return undefined;
}
}
return xmlDoc;
}
part 3:
function Event(date)
{
this.date = date;
}
//funciton to charge XMLElements
function ChargeXMLElements()
{
try
{
xmlDoc=OpenFile("data.xml");
eventosXML=xmlDoc.getElementsByTagName('ROW');
if (eventosXML.length>0)
{
eventos=new Array(); //clase con los datos cargados
}
for(var i=0; i< eventosXML.length; i++)
{
xmlEvento=eventosXML[i];
fecha=xmlEvento.getElementsByTagName("DATE")[0].firstChild.nodeValue;
evento = new Evento(fecha);
eventos.push(evento);
}
return eventos;
}
catch(e)
{
alert("Error on the load data");
}
}
//show information take on previously function, and show on a table (with only 1 column)
function showinformation()
{
var tr;
var td;
var tabla;
var l=0;
ev= CargarXMLEventos();
auxUnEven=ev.pop();
tabla=document.getElementById("datos");
while (auxUnEven!=undefined)
{
tr=tabla.insertRow(l);
//creamos las columnas de la tabla
td=tr.insertCell(0);
td.innerHTML=auxUnEven.date;
/*td=tr.insertCell(1);
td.innerHTML=auxUnEven.hora;
td=tr.insertCell(2);
td.innerHTML=auxUnEven.comentario; */ //if you need more columns
l++;
auxUnEven=ev.pop();
}
if (l==0)
{
tabla=document.getElementById("datos");
tr=tabla.insertRow(l);
td=tr.insertCell(0);
td.innerHTML=" dont have events ";
}
}
part 4:
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>example XML</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="filejs.js"></script>
<script type="text/javascript" src="Openxml.js"></script>
</head>
<body>
<table id="datos">
<script type="text/javascript">
showinformation();
</script>
</table>
</body>
</html>
i think that is functional but i don't know. I see the information here: http://elcaminillo.wordpress.com/2012/01/15/leer-xml-en-javascript/ (spanish, sorry)

How can I traverse XML in an HTML document?

I need to save the data offline, so I save the data as XML. I don't know how to get the XML object with JavaScript.
<xml id=xmlData>
<data>
<tb1>
<id>1</id>
<name>1</name>
</tb1>
<tb1>
<id>2</id>
<name>2</name>
</tb1>
</data>
</xml>
<html id="MainForm">
<head id="Head1">
</head>
<body>
<script type="text/javascript">
var xmlDoc;
// code for IE
if (window.ActiveXObject)
{
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
}
// code for Mozilla, Firefox, Opera, etc.
else if (document.implementation.createDocument)
{
xmlDoc=document.implementation.createDocument("","",null);
}
else
{
alert('Your browser cannot handle this script');
}
xmlDoc.async=false;
xmlDoc.load("");//how can i get the xml?
var x=xmlDoc.documentElement.childNodes;
for (var i=0;i<x.length;i++)
{
if (x[i].nodeType==1)
{
//Process only element (nodeType 1) nodes
document.write(x[i].nodeName + ": ");
document.write(x[i].childNodes[0].nodeValue);
document.write("<br />");
}
}
</script>
</body>
</html>

Try this:
var txt='<xml id=xmlData><data><tb1><id>1</id> <name>1</name></tb1><tb1><id>2</id><name>2</name></tb1></data></xml>';
if (window.DOMParser)
{
parser=new DOMParser();
xmlDoc=parser.parseFromString(txt,"text/xml");
}
else // Internet Explorer
{
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.loadXML(txt);
}
var x=xmlDoc.documentElement.childNodes;
for (var i=0;i<x.length;i++)
{
if (x[i].nodeType==1)
{
//Process only element (nodeType 1) nodes
console.log(x[i].nodeName + ": ");
console.log(x[i].childNodes[0].nodeValue);
console.log("<br />");
}
}
Fiddle: http://jsfiddle.net/hB5E9/

I use a local variable in the document to do this. If you can get the XML as a string property of an object then this might be useful -
I have a somewhat similar usage in my application. I read an "XML" column from the SQL Azure DB through a service call and I get this XML data as a "string" property of the service return object.
Here is what I am doing to read that :
_LocalVariable= XMLFromString(DataObject.Filter);
$.each($(_LocalVariable).find("Filter"),
function (index,filterDataItem) {
$filterDataItem =$(filterDataItem);
var tFilterType =$filterDataItem.find("FilterType").attr("class");
var tOperator = $filterDataItem.find("Operator").attr("class");
var tValue = $filterDataItem.find("Value").text();
// Do more operations
});
//--------------------------------------------------------------------------------
//Parse XML from String
//--------------------------------------------------------------------------------
function XMLFromString(pXMLString) {
if (!pXMLString)
pXMLString = "<FilterRule></FilterRule>";
if (window.ActiveXObject) {
var oXML = new ActiveXObject("Microsoft.XMLDOM");
oXML.loadXML(pXMLString);
return oXML;
} else {
return (new DOMParser()).parseFromString(pXMLString, "text/xml");
}
}
Where my XML in the database is something like this -
<FilterRule>
<Filter id="1">
<FilterType id="AB11">Ranking</FilterType>
<Operator id="1">Equal To</Operator>
<Value>1</Value>
</Filter>
<Filter id="2">
<FilterType id="AB22">Segment</FilterType>
<Operator id="1">Equal To</Operator>
<Value>2</Value>
</Filter>
<Logic>Or</Logic>
</FilterRule>