Script languages with JavaFX

Question

Hello everyone,
The use of script languages is bound to be a newbie question so I used a general the thread topic.
In my case I have two questions. I want to find the relevant documentation to find answers to these questions. Note: where to find the information (if available).
* How can I hook JRuby into an FXML user interface design?
I was following the javascript part of the tutorial,
* "Getting Started: Using FXML" (http://docs.oracle.com/javafx/2/get_started/fxml_tutorial.htm)
That was OK but when I tried a few simple modifications, I got stuck.
* Which document shows me what functions are available to the executing javascript? The following simple example does NOT work:
function handleSubmitButtonAction( ev ) {
    alert("something");
    actiontarget.setText( "Calling the Javascript function." );
The runtime gets an exception on alert( ). Until now I pretty much felt that alert( ) was part of the baseline. I'm happy enough to locate the documentation that tells me how to call 'standard' javascript functions.
And I'd love to hear from anyone who's used JRuby with JavaFX or FXML.
Kind regards,
Will.

Answer 1

How can I hook JRuby into an FXML user interface design?The answer to that question lies in the stackoverflow question "Using fxml with jruby"
http://stackoverflow.com/questions/13831708/using-fxml-with-jruby
Which document shows me what functions are available to the executing javascript? I don't know, I doubt there is one.
I suggest you just treat the javascript environment as headless (incapable of invoking javascript functions such as alert which might generate a UI).
If you want to pop up an alert, create an alert dialog in JavaFX and invoke that from your script.
For a JavaFX standard dialog box library see: http://fxexperience.com/2012/10/announcing-the-javafx-ui-controls-sandbox/
I believe (and I could be wrong) that JavaFX 2.2 is using a modification of the Rhino engine, which you can find documentation on here:
https://developer.mozilla.org/en-US/docs/Rhino
I believe (and I could be wrong) that JavaFX 8 will use a Nashorn engine:
http://openjdk.java.net/projects/nashorn/