Photoshop scripting output

Question

Is there a console or log for output from script events?  I tried making a function, which executes an alert correctly, but doesn't create a new document.  I can't find any way to see if this syntax is wrong or the command is just outdated. 
In the code below, for example, I see the alert message, but no new document.  I don't see anyway to see what's wrong with it and I pulled that line straight from the photoshop scripting guide. 
var createDocument = function() {
    alert("creating new doc!");
    app.documents.add(2,4);

Answer 1

It's only a wrong syntax.
version 1:
app.documents.add (40,40);
var a = documents.length -1;
app.documents[a].artLayers.add();
version 2:
app.documents.add (40,40);
activeDocument.artLayers.add();
By the way: the "footer" in ESTK shows you mostly the reason of mistakes.
Have fun