Today I found something pretty nice a Lisp interpreter in Java Script.
I came to it through logowiki. I found it pretty amazing that you can run the example programs you have in your wiki. So I asked google about it.
The interpreter lacks some functionality like defun, defmacro and so on but I think it would be a nice base for creating logowiki like interpreter. I have not read the source yet but I think it may be a nice way to show someone how to create a simple lisp interpreter.