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How to append more than 1 nested node for XML in javascript?

Good day everyone,
I am currently trying to append a metadata file. Sorry in advance if I did anything wrong, I am unfamiliar with editing XML codes in JS.. Thanks!
Currently, I am having difficulty getting the results that I expected. I am trying to insert 2 new nodes one nested over the other into the newParentTestNode.
I want to add a couple of nodes within the TestNode as seen in the results I want.. I can't seem to find a solution online. Please do help thanks!
I am currently getting this result:
<gmd:MTTEST><TESTNODE2/></gmd:MTTEST>
But the result I want is:
<gmd:MTTEST>
<gmd:TestNode>
<gmd:TestNode2>
</gmd:TestNode2>
</gmd:TestNode>
</gmd:MTTEST>
xmlTest: function (evt) {
if(this.item.metadata_standard_name == "Correct Data"){
xmlString = this.item.sys_xml_clob;
var metadataXmlString = jQuery.parseXML(xmlString);
let newParentTestNode = metadataXmlString.getElementsByTagName("gmd:MTTEST")
newNode = metadataXmlString.createElement("TestNode")
newNode2 = metadataXmlString.createElement("TestNode2")
let addMe = newNode.appendChild(newNode2)
newParentTestNode[0].appendChild(addMe)
xmlString = (new XMLSerializer()).serializeToString(metadataXmlString);
console.log(xmlString)
}

appendChild() returns the node that is appended not the parent node.
This means that newNode.appendChild(newNode2) returns newNode2, which you'll then append to your root node, effectively removing TestNode2 from TestNode and appending it directly to MTTEST.
You don't need to assign the result of appendChild to a new addMe variable because appendChild modifies the structure in-place, so you gain nothing from the return value (as you already have variables referencing both the parent and the child element). So in the end you just need to append newNode (which will already contain newNode2) to newParentTestNode.

InDesign Scripting: Deleting elements from the structure panel

I've imported some XML files inside InDesign (you can see the structure in the picture below) and I've also created a script to get some statistics concerning this hierarchy.
For example, to count the "free" elements:
var items = app.activeDocument.xmlElements.everyItem();
var items1 = items.xmlElements.itemByName("cars");
var cars = items1.xmlElements.everyItem();
var c_free = cars.xmlElements.itemByName("free");
var cars_free = c_free.xmlElements.count().length;
I also have apartments in my structure that's why I'm using itemByName.
The code above returns the correct number of free cars in my structure.
What I'm trying to do - without any luck so far - is to target those free items (inside cars) and either delete all of them or a specific number.
My last attempt was using:
var del1 = myInputGroup2.add ("button", undefined, "Delete All");
del1.onClick = function () {
cars.xmlElements.everyItem().remove();
}
inside a dialog I've created.
Any suggestions will be appreciated cause I'm really stuck here.

I would probably use XPath for this. You can use evaluateXPathExpression to create an array of the elements you want to target. Assuming your root element is cars and it contains elements called cars1, and you want to delete all free elements within a cars1 element, you could do something like:
var myDoc = app.activeDocument;
//xmlElements[0] is your root element, in this case "cars". The xPath expression is evaluated from cars.
//evaluateXPathExpression returns an array of all of the free elements that are children of cars.
var myFrees = myDoc.xmlElements[0].evaluateXPathExpression("cars1/free");
for (var i = myFrees.length - 1; i>=0; i--){
myFrees[i].remove();
}
Tweaking this would require some knowledge of xPath, but it's not terribly hard to learn the basics and it does seem like the simplest approach.

I think your main problem was that XMLElements hasn't a itemByName method. You can only reference XMLElements through their indeces or ids.
Secondly you assume that you got xmlElements from XPath expression but it's likely that you got nothing as your xpath seems uncorrect.
var myFrees = myDoc.xmlElements[0].evaluateXPathExpression("./cars1/free");
var n = myFrees.length;
if ( !n ) {
alert("Aucun élément trouvé");
}
else {
while (n--) myFrees[n].remove();
}
You need to start your expression by setting the origin of your xpath. Here a dot "./" is used to tell you want to look for cars1/free xml elements at the "root" of the xmlelement. Using "//" on the contrary would have returned any cars/free items unregardingly of their locations.

Accessing a Dynamically Named array in jQuery/javascript

I wish to name an array according to the table row containing the button that was clicked.
I get the table row thus:
var rowNum = $(this).parent().parent().index();
Now, I wish to name the array and access it.
var arrayName = 'arrTR' + rowNum;
window[arrayName] = new Array();
window[arrayName]["First"] = "Bob";
window[arrayName]["Last"] = "Roberts";
window[arrayName]["email"] = "me#there.com";
//The array should be accessible as arrTR__
alert(arrTR1["Last"]);
The alert does not work, so I am doing something wrong.
How should I refactor the code to allow me to update and access the array?
jsFiddle

What you're doing with the dynamically named variables is essentially creating an array of those variables (one for each rowNum), but giving each of those array elements its own individual named variable.
There is a much better way to do this. Instead of generating a series of dynamically named variables, make a single array or an object. Then add an element or property for each of the dynamically named variables you were going to generate.
Your test code could look like this:
var arrTR = [];
var rowNum = 1;
arrTR[rowNum] = {
First: 'Bob',
Last: 'Roberts',
email: 'me#there.com'
};
alert( arrTR[1].Last );
Alternatively, you can do something with $.data as mentioned in Johan's answer. But if you do use plain JavaScript code, use a single array as described here instead of multiple dynamically named variables.
There are several reasons to do it this way. It's cleaner and easier to understand the code, it may be faster when there are large numbers of entries, and you don't have to pollute the global namespace at all. You can define the var arrTR = []; in any scope that's visible to the other code that uses it.
Arrays and objects are made for keeping track of lists of things, so use them.

There is nothing wrong with your code, and the only place it has error is the alert since it is not defined on the first click button
see this fiddle with a little update
if(rowNum === 1)
alert(arrTR1["Last"]);
else if(rowNum === 2)
alert(arrTR2["Last"]);
fiddle

How about something like this?
$('.getinfo').click(function() {
var result = $('table tr:gt(0)').map(function(k, v){
return {
firstName: $(v).find('.fname').val(),
lastName: $(v).find('.lname').val(),
email: $(v).find('.email').val(),
}
}).get();
//update to show how you use the jQuery cache:
//1. set the value (using the body tag in this example):
$('body').data({ result: result });
//2. fetch it somewhere else:
var res = $('body').data('result');
});
Not sure how you want to handle the first row. I skip in in this case. You can access each row by result[index].
As you might have noticed, this saves all rows for each click. If you want to use the clicked row only, use the this pointer.
http://jsfiddle.net/nwW4h/4/

Getting json sibling data

I currently have a json object, that I loop through and output a list of links.
See fiddle:
http://jsfiddle.net/jasonday/hzZ8j/
each link is given an id based upon the storeID in the json.
What I want to do, is when a link is clicked it finds the id in the json, and then writes the sibling element "otherData" to #otherDataDiv
I've worked with traversing xml, but I'm not sure how to accomplish this with json.
Any help would be appreciated. thanks.

You just have to loop over, like this:
var target = "store17",
foundStore = {};
for(var k1 in object.state){ var state = object.state[k1];
for(var k2 in state.store){ var store = state[k2];
if (store.storeid == target){
foundStore = store;
break;
}
}
}
However, if you were using jQuery templates then you could just look for 'tmplItem' in the data array on the element.
Additionally, if you weren't building the HTML manually for this, I would suggest using jQuery data here for this project. It would solve your problem immensely.
to store: $(selector).data('unique name here',data);
to retrieve: var usefulname = $(selector).data('unique name here');
and then in your onclick for each link you could:
var otherData = $(this).data('unique name here').otherData;

JavaScript/JQuery: use $(this) in a variable-name

I'm writing a jquery-plugin, that changes a css-value of certain elements on certain user-actions.
On other actions the css-value should be reseted to their initial value.
As I found no way to get the initial css-values back, I just created an array that stores all initial values in the beginning.
I did this with:
var initialCSSValue = new Array()
quite in the beginning of my plugin and later, in some kind of setup-loop where all my elements get accessed I used
initialCSSValue[$(this)] = parseInt($(this).css('<CSS-attribute>'));
This works very fine in Firefox.
However, I just found out, that IE (even v8) has problems with accessing the certain value again using
initialCSSValue[$(this)]
somewhere else in the code. I think this is due to the fact, that I use an object ($(this)) as a variable-name.
Is there a way arround this problem?
Thank you

Use $(this).data()
At first I was going to suggest using a combination of the ID and the attribute name, but every object might not have an ID. Instead, use the jQuery Data functions to attach the information directly to the element for easy, unique, access.
Do something like this (Where <CSS-attribute> is replaced with the css attribute name):
$(this).data('initial-<CSS-attribute>', parseInt( $(this).css('<CSS-attribute>') ) );
Then you can access it again like this:
$(this).data('initial-<CSS-attribute>');
Alternate way using data:
In your plugin, you could make a little helper function like this, if you wanted to avoid too much data usage:
var saveCSS = function (el, css_attribute ) {
var data = $(el).data('initial-css');
if(!data) data = {};
data[css_attribute] = $(el).css(css_attribute);
$(el).data('initial-css', data);
}
var readCSS = function (el, css_attribute) {
var data = $(el).data('initial-css');
if(data && data[css_attribute])
return data[css_attribute];
else
return "";
}

Indexing an array with a jQuery object seems fishy. I'd use the ID of the object to key the array.
initialCSSValue[$(this).attr("id")] = parseInt...

Oh please, don't do that... :)
Write some CSS and use the addClass and removeClass - it leaves the styles untouched afterwards.

if anybody wants to see the plugin in action, see it here:
http://www.sj-wien.at/leopoldstadt/zeug/marcel/slidlabel/jsproblem.html