Comment What did I like when learning to program? (Score 1) 525
If I had to do it now, I would recommend javascript for many reasons.
First, no IDE is required. I would avoid an IDE as long as possible, that limits what box you can work on, whether XCode,
Second, an interpreted language doesn't need to be compiled (which is better than C/C++ or other complied languages) so you can code and run your program. Javascript just requires refreshing the page (though you may have to help him understand caching).
Third, there are many good javascript examples out there. I would recommend viewing Crockford's videos.
Fourth, if you setup an external server, he can show his friends what he has made, which has a definite coolness factor. "Hey, look at this program I made to do our physics assignment." "Look at this game I made"
Why javascript over python? Personal preference, plus I think there more answers to problems already documented on the web for javascript, though you can ask python group a question and get an answer quickly.