collection element associated with artifact type empty
var myvar1 = input1;
var myvar2 = input2;
(Obviously I use more meaningful names than myvar1 and myvar2)
Then I reference myvar1 and myvar2 in my code. What this means is that in the JS testing tool, I can declare and provide values to input1 and input2, but I leave those lines behind when I copy into CA-RA (or I may bring them over as comments to make continuned testing easier).
Doing this, I can validate my JS code is doing what it is supposed to without the need to have everything in CA-RA initialized.
Hope this helps...