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Re:No More Callbacks: 10,000 Actors, 10,000 Threads, 10,000 ... by RussianCow on Thursday October 17, 2013 @02:34AM (#6563950)
Haskell is even older, but you don't see many job ads for it. I don't think it has much to do with the age of the language. Node.js is an example of a very young platform that many, many startups are using. (Although, to be fair, JavaScript has been around for quite some time now.)
Re:No More Callbacks: 10,000 Actors, 10,000 Threads, 10,000 ... by cmccabe on Friday October 18, 2013 @09:09PM (#6574918)
In order for a programming language to get used:

* it has to fill a need people have.

* people have to know about it.

* it has to have a mature implementation.

Age helps with point #2 and #3.

With regard to JavaScript, the web browser pretty much forces you to use it. So it doesn't really matter how good or bad it is, it will have adoption.