Generating MULTIPLE random items in an array using Javascript

First time asking a question... Hope I don't mess this up lol.

Like the title says.. lets say my array contains 5 separate strings. I would like my code to output for example... 2 items in one run, then 4 items in the next, etc etc.

The link to my code in CodeCademy is https://gist.github.com/55aca936687d56351f57358fd89344c0

(Line 28.. at least i think that's where my issue is. And feel free to add any other tips/advice, I want to learn as much as I can =] )

Appreciate it! THANK YOU!!