Thanks very much for your reply. I haven't read "eloquent Javascript", but it's on my "must-read" list. I'm still feeling my way around Javascript, but you're the 3rd or 4th person to mention "eloquent Javascript", so it's apparently a very useful source.

Should this be included in Fundamentals? Everyone has his own definition of "fundamentals" but, from my perspective as someone who has done only the Codecademy course in Javascript and a handful of katas, the 'fundamental' tag seems a bit misplaced here.

is there a way to do this in fewer than 250 chars without using regex? My only exposure to JS is completing a Codecademy course and some level 8 and level 7 katas. Based on my limited experience, I instinctively reached for a 'switch' statement, but that puts me around 350 chars, even after smushing my code together as much as possible. I suspect that I'm missing a more elegant solution, but I don't know regular expressions.

Thanks, Dean! I'll get the hang of this environment soon.

I'm trying to teach myself Javascript to prepare for an assessment test given by Full Stack. I took Codecademy's online "Javascript" course, which felt like a good place to start. Now I'm trying some CodeWar challenges. I started at level 8 as would anyone, and I've submitted a few katas (Isograms, Remove the Minimum, Grasshopper - Grade book), but now I'm stuck on one that looks like it should be straightforward - "A function within a function". I'm trying to solve this, and I hate to put up the white flag, but I feel like I've run out of ideas. My question is whether I can find the solution to this somewhere. I want to move on to other katas and to continue learning, but I hate the feeling of moving past something without understanding it. Can someone offer any guidance on this?