Not sure if it's implied but JavaScript was basically ideated as Scheme with C syntax in the Browser. That concept didn't take off for quite some time but pure functional programming within React actual got quite some popularity. Even "plain React" is borrowing a lot of concepts from FP, especially when combined with Flux and other add-ons. During that time also Clojure due to Om (React with Clojure) gained some popularity.
One language where FP basically arrived in the mainstream is by the way Scala. And there are other newer language which allow for FP'ish programming like Kotlin.
But otherwise it's true, languages like Schema or Haskell will probably not arrive in the mainstream soon.
One language where FP basically arrived in the mainstream is by the way Scala. And there are other newer language which allow for FP'ish programming like Kotlin.
But otherwise it's true, languages like Schema or Haskell will probably not arrive in the mainstream soon.