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Overload a JS plugin function with a function from inside

I want to call a function which is in my plugin.
I overloaded a function but I want to call another function from it.
$("mySelector").Myplugin({
My_function : function (){
*do some stuf*
function_from_the_plugin();
}
});
An error appears that says "Unknown function". I think it do not search the function in the plugin but outside.
Do you know how I can do?
I already try with "this", a variable corresponding to my plugin object.
If you have an idea please share it with me.
Thank you for reading this post.

Add this.function_from_the_plugin(); in code where Myplugin() is initialized.

$.getJSON callback does work

I am experimenting with jQuery and I try to use the $.getJSON function
I red that "A reference to a function declaration could equally be provided as the callback". So instead of an anonymous function, I use a reference to a function declaration like this
$('#letter-b').click(function(e) {
e.preventDefault();
$.getJSON('b.js', outside(data));
});
function outside (data){alert(data);}
I get no alert. Instead I get Uncaught ReferenceError: data is not defined
What am I missing? Is it my syntax?
Thanks in advance

You must give the reference to your function. Like this :
$('#letter-b').click(function(e) {
e.preventDefault();
$.getJSON('b.js', outside);
});
If you write outside(data), you just execute your function.

how to create instances of a function in javascript?

Im trying to add an event listener to a object for example:
this.startLoading = function(){
this.a.addEventListener("complete", this.loadingHandler()); this gives me an error
},
this.loadingHandler = function(){
console.log("im doing something")
}
ERROR: "Uncaught Error: addListener only takes instances of
Function. The listener for event "complete" is "undefined"
However if I put the loadingHandler() function inside the scope it works, for example:
this.startLoading = function(){
var loadingHandler = function(){...}
this.a.addEventListener("complete", loadingHandler()); // this works
},
Im not sure what instances of a function means in that regard?

When you put () after a reference to a function, that means to call the function, and the value of the expression is whatever the function returns.
Your second example, that you say works, actually will not work, and you'll get the same error if the "startLoading" function is called.
Because you probably need to retain the proper context (this), what you probably need is
this.a.addEventListener("complete", this.loadingHandler.bind(this));
The .bind() method returns a function (exactly what addEventListener requires) that in turn will invoke your function such that this has the value requested.

Trying to call method name using string: Uncaught TypeError: Object [object global] has no method

So, I've figured out how to call a method in JavaScript when you have the method name in a string e.g. strCallback = 'targetMethod'; window[strCallback]();, however, I get the following error message indicating that it can't find the method and after researching I'm still not sure why.
Calling the method by the actual name works, but not by using window[strCallback]();
Error:
Uncaught TypeError: Object [object global] has no method 'targetMethod'
Code:
function startMethod(strCallback) {
var results = '...';
// window[strCallback](results); // <-- Causes error
targetMethod(results); // <-- Works
}
function targetMethod(r) {
console.debug(r);
}
startMethod('targetMethod');
Thanks for any help.

From the discussion in comments it looks like the problem is the context in which the callback method is declared. If you use window[callback] it expects the callback to me declared in the global context, in your case it does not appear to be the case. It might be because you have declared everything inside a anonymous function/dom ready creating a closure context for the function.
As a solution I would recommend not to pass the callback as a function name string, instead pass it as a function reference.
So instead of calling startMethod('targetMethod');, you need to call startMethod(targetMethod); and invoke callback using strCallback() instead of window[strCallback](results);.
I solution we worked out in the comments was just a workaround where we forced the callback to the global scope which is not a recommended method

Actionscript error when executing eventlistener in javascript

I have the following code using actionscript and the indesign sdk:
At the beginning of my Class
[ Embed (source= "resources/js/eventHandlers.jsx" , mimeType= "application/octet-stream" )]
private static var jsHandler:Class;
var jsxInterface:HostObject = HostObject.getRoot(HostObject.extensions[0]);
In my function:
jsxInterface.eval( new jsHandler().toString());
jsxInterface.init( this );
document.xmlElements.item(0).xmlElements.item("docpreset").importXML(File.applicationStorageDirectory.resolvePath("temp/cstyles.xml"));
jsxInterface.afterImport(document);
this is the code inside eventHandlers.jsx:
var asInterface = {};
function init(wrapper) {
asInterface = wrapper;
}
function afterImport(document) {
document.addEventListener (Document.AFTER_IMPORT, asInterface.test());
}
and from javascript I call this:
public function test():void {
trace("ole");
}
Now, the test function gets executed correctly, but after that the next thing that gets called is again this:
jsxInterface.afterImport(document);
and then an error is thrown:
Error: ActionScript error: Error: Missing required parameter 'handler' for method 'addEventListener'.
I have no idea anymore on what I need to do. All I want is for the xml to be imported and an event dispatched when the import is complete.
I have no idea why I even have to call a javascript function, and can't use the document.AFTER_IMPORT inside a normal eventListener. Can anyone help me out on this one please?

The problem seems to be that in your afterImport() method, you are adding the event listener incorrectly.
The second parameter to the addEventListener() method should be the name of a function (technically it's a reference to a function). In your code, you have put parentheses on the end of the function name -- so instead of providing the reference to the function, the function is being executed.
When the function executes, it returns nothing, so the second parameter to addEventListener() is missing and you get the error.
Try this instead:
function afterImport(document) {
document.addEventListener (Document.AFTER_IMPORT, asInterface.test);
// notice no "()" here ^^
}
[Edit]
Since you are still getting the error, you might want to add some code to debug it further.
In the method above, comment out the addEventListener line, and replace with something like this:
// for debugging
if (asInterface.test == null)
{
trace("fail: it's null");
}
else if (asInterface.test is Function)
{
trace("success: it's a function");
// this is the only code path where your error will not occur
}
else
{
trace("fail: i don't know what this is: ", asInterface.test);
}

I think you have to initiate the AS wrapper like this :
jsxInterface.init( this );
then the AS API becomes available to the js code.
Loic