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Using AngularJS Scope Variable in another scope Variable

I have a Problem with the AngularJS Scope. I want to use a Variable of it, which contains an Object. In the Object I want one index which is saved in another scope Variable.
So I want something like that:
{{graphdata.nodes._data.{{selectedElements.nodes[0]}} }}
graphdata.nodes._data is the Object, and the index I want is saved in selectedElements.nodes[0]. Can someone help me with that?

You cannot and shouldn't interpolate twice. just write:
{{graphdata.nodes._data[selectedElements.nodes[0]]}}

Accessing javascript object named via php globally

I have a bunch of CSS properties stored in a MySQL database accessed via PHP. I need to make these properties available to JavaScript after the page has finished loading.
So what I did is foreach row, put the values in a Javascript object like so:
foreach ($cellcontent as $cellproperty) {
echo 'var '.$cellproperty->cell_id.' = {cellwidth:"'.$cellproperty->cell_width.'"};';
}
(For simplicity's sake I've only included one object property here but in reality there are many more.)
My problem is that at runtime, via JavaScript I get the cell_id reference which is somewhere in the html page like so:
var dacell = $(this).closest("div");
var cellid = dacell.attr("id");
So at this point, cellid is equal to the name of my var from the php output.
But when I try to get the property of my object (cellwidth) via JavaScript it doesn't work. Says its undefined when I try to see the value in an alert:
alert(cellid.cellwidth);
I think I'm just not referencing the actual object at this point and just trying to get a property of what has now become a string.
Is there a way to get back the reference to the object itself?

var cellid = dacell.attr("id");
The variable cellid is a string. Your hopes would be that the variable your are looking is in the global namespace which you can access via the following:
window[cellid].cellwidth

It's an awfull practice to pollute the global namespace with so much stuff.
Fetch all the values you need to inject into the JS, create an associative Array and inject it as a single JSON into the Page.

Nevermind everyone. The eval() javascript function fixed it all.
Instead of doing:
alert(cellid.cellwidth);
I did:
alert(eval(cellid).cellwidth);
and everything worked.
Thanks for all your time.
Cheers,
Erick P.

Dust.js get call count of helper in template

So I have a dust.js helper which requires some jsx module when called and afterwards renders this module as html (some kind of plugin).
{#react type="Text"\}
...
<some Markup>
...
{#react type="Text"\}
{#react type="Text"\}
Meanwhile I have a data structure which contains all the elements that should be rendered on this template (a page)
['1st', '2nd', '3rd']
In my helper I'd like to know how often I called #react. Like incrementing a counter on the context which all helpers called within this template can access.
I was fiddeling around with context.pop() and context.push but wasn't able to mutate the template's context. Every helper gets it's own. So I either need a way to get the call count of the helper or store the current number of invocations of the helper somewhere accessible to the other ones.
However, when doing sth like {#react type="Text" index=0\} and afterwards accessing it with context.get(['page', 'elements', params.index]) it works (of course). But this enforces me to keep count of the elements I am disposing (especially annoying when adding and removing elements)
Hope s/o has an idea, maybe I'm just missing sth really simple.
Cheers.

There is a special global object attached to each Context that contains references you'd like to be available everywhere in your template.
For more information, see Context Globals.
You prepopulate the global by calling dust.context({ foo: 'bar' }) to create a Context object. You can pass this to Dust in your render step instead of a plain Object.
Inside any helper, you can access the global directly to set properties on it:
react: function(chunk, context, bodies, params) {
var numTimesCalled = ++context.global.numTimesCalled;
});
You can use properties in the global in your template. You can think of them as being at the "lowest" level in the context stack.

JavaScript: how to pass object value from one function to another

I am using code lines like the following in order to fetch data from an intranet website:
util.setProp(obj, "firstNameOld", $(msg).find('#fname_a').text());
Now I have another function in the same file where I want to use the above again, resp. the value of that object - currently I am hard-coding this ('Test') for test purposes:
util.setProp(obj, "firstNameNew", 'Test');
How can I pass the value from the firstNameOld object in one function to the firstNameNew object in another function ? If a solution with global variables is better here than this would work as well.
Many thanks for any help with this, Tim.

I've never used the framework that includes util But I imagine that if there is a setProp() then there has to be a getProp() or something similar.
If so, you could do something like
util.setProp(obj, "firstNameNew", util.getProp(obj, "firstNameOld"));
This also relies on the assumption that you want to copy from two properties in the same object.
If not, then pass the desired source object in the getProp() call.

My guess is that functions (or properties) are called "firstNameOld" and "firstNameNew", so the first time you get it from selector, second time you want to do the same.
Try to use the local variable like that:
var text = $(msg).find('#fname_a').text();
//
util.setProp(obj, "firstNameOld", text);
//
util.setProp(obj, "firstNameNew", text);

Programatically output variable and object names as literal text strings

I'd really like to track variables without switching between Firebug console windows or clicking around so much, so I want to draw a runtime viewer of variable names and their corresponding values that will display on the page of the app I am building.
I'd like to two functions, show(variableName) and freeze(variableName). They will output both the variable's value and the name of the variable or object as a literal string which will serve as the text label in the viewer. freeze(variableName) is the same as show(variableName) except with a setTimeOut timer for tracking loops.
I'm sure I'm missing something basic, but I haven't found out a way to get the string that comprises the name of a value programmatically so I can use it as a label. I guess I could create the table with hardcoded labels prior to runtime and just populate it with values at runtime, but I really want to generate the table dynamically so it only has those variables I specifically want to show or freeze. Simple functions:
foo1 = "Rock";
show(foo1);
foo2 = "Paper";
show(foo2);
foo3 = "Scissors";
show(foo3);
should output this via getElementById('viewer-table'):
<table>\<tr><td>foo1</td><td>Rock</td></tr><tr><td>foo2</td><td>Paper</td></tr><tr><td>foo3</td><td>Scissors</td></tr></table>
I've tried this solution:
How to convert variable name to string in JavaScript?
and eval() but it's not working for me...I dunno, shouldn't this be easy? Getting frustrated...
Thanks,
motorhobo

I am not sure you can actually get the "name" of the variable that is being passed into a function for two reasons:
1) The variable is just an identifier. In fact, you could have multiple identifiers reference the exact same object. You are (generally) passing that reference, not any actual object.
2) The show/freeze function is going to stomp on the identifier name, either through named arguments in the function declaration or by referencing them through the arguments array.
I was trying to think if there was some clever way to use the arguments.callee or the stack property on an exception in Firefox... but I can't see anything that would expose the arguments as you desire.
What I would recommend is to simply add the name of the variable and its value to a simple object, and call one of the various jsDump methods (I prefer the one in QUnit):
function show(o) {
document.getElementById("viewer-table").innerHTML = QUnit.jsDump(o);
}
// actually use the method
show({"foo1":foo1});

There's no easy way to solve this as the called function simply doesn't know the original name of the variable. You couldn't solve this with reflection even (esp. in javascript) so you'll have to pass the name of the variable to the function too. To follow the link you posted:
function show(varObject)
{
for(name in varObject)
{
alert(name + ": " + varObject[name]);
// save both name and reference to the variable to a local "to observe array"
}
}
And call it with
var test = "xxx";
show({'test' : test});
Within the for loop you could add easy variable to a monitor array and update your gui in fixed time intervalls (you can't be notifed when a signle variable changes it's value. You need some kind of global monitor/observer which exactly you're trying to create).