I thought it is probably pretty easy to write a LISP interpreter in Javascript (or a Scheme interpreter), so why not do that and have it execute your LISP code? I thought about that recently, when I took up Scheme programming again - so no, you are not alone ;-)

I assume it is easy to write such an interpreter because it is frequently an exercise in LISP classes, and I think it has been done many times before (for example I think some games took that approach, using LISP as a scripting language).