There are JS frameworks that port to most platforms in about 3 minutes (use a Mac for iOS builds):

https://quasar.dev/introduction-to-quasar/

That being said, Erlang/Elixir abstracts most db use-cases with ecto, and has some other incredibly powerful scalable features for sites:

https://www.phoenixframework.org/

* Distributed

* Fault-tolerant

* Highly available

* Hot swapping

Depends on the use-case, but if your product is <14 month lifecycle App/shovel-ware, than go JS for the labor compatibility... Yet if you are hitting >40k concurrent users, the options winnow down fairly quickly.

Have fun =3