If you're talking Node.js, sure, but that was a stepping stone. It's now being used for all sorts of weird things, like WinRT, and as GNOME's flagship desktop

If you're talking Node.js, sure, but that was a stepping stone. It's now being used for all sorts of weird things, like WinRT, and as GNOME's flagship desktop app language. These need not have any server-side components. A large part is obviously that JavaScript is now well known and many developers have been exposed to it, but also because a minimal prototype language with first class functions is often all you need or want, just like Lua. (I assume this has been realized after exposure to JavaScript, or maybe I'm giving JS devs too much credit and they're not fans of minimal and clean languages.)