JavaScript is going to be the thing at the client end whatever. Otherwise the choice would best be decided by which language you are currently most familiar wi

JavaScript is going to be the thing at the client end whatever. Otherwise the choice would best be decided by which language you are currently most familiar with - if you can't use that then use the one closest to that. Course if you want to use ROR then the choice is made - indeed the choice of framework/platform might just make the decision for you. In the end it is probably not worth getting too hung up about - just get started and ship some working code!