Exercise one
============

Here's some JavaScript code I found somewhere.  I've changed the names
of everything to hide the origin of the code.  But it's not something
I've made up.

The exercise is

#.  Understand and describe what it does.

#.  Provide clearer code that does the same thing.

#.  Suggest a better way of going about things.

.. literalinclude:: /core-javascript-work/exercise-1.js
   :language: javascript


Hints
-----

#.  The code creates and calls an anonymous function, a bit like this.

    .. code-block:: javascript

       js> a = function(x){return x + 1}(2)
       3

#.  What happens if AAA is an object?

#.  What happens if AAA is undefined?

#.  For now, ignore the assignment to BBB.fff.  What value does AAA
    get?  (The answer depends the initial value of AAA.)