Treehouse Badges API - How would I count the .length of "points" within a loop?

I created a loop that counts Badges and displays them. However, "points" seem like a different monster altogether.

Right now, I can do something like:

data.points['total']

...and it will give me the value.

But what if I wanted to loop through it like

data.points['html']
data.points['css']
data.points['js']

...etc., without defining which to display?

Plus the output seems to rely on me adding the title before the points.

Example:

"HTML: " + data.points['html'] 

Just like Go was added recently, it doesn't seem like this should remain as something I would have to manually update each time a new type of course is introduced.

Currently, any loops result as "undefined" with the points. Seems so fundamental, what am I missing here? lol

Reference: https://teamtreehouse.com/stevenventimiglia.json