There are a handful of Javascript frameworks taking this approach. The community has adopted the term "isomorphic javascript" to collectively describe them (i.e

There are a handful of Javascript frameworks taking this approach. The community has adopted the term "isomorphic javascript" to collectively describe them (i.e. "same code on the client and server"). See http://isomorphic.net http://isomorphic.net for examples. However, note that they appear to be quite inclusive in their definition. For example, I'd definitely consider Meteor to be one of these frameworks, but React? Not so much.