Questions and answers

Hi Stephan,

I have added additional comments to your js file to answer the questions posed.
Read the source and/or merge the commit to see those comments.

You can see the source where I forked (copied) your repository here: https://github.com/bboyle/ShoppingList/blob/questions/FullWebsite/js/script.js

Github should also do a line by line comparison on the files when you review this pull request.

cheers
Ben