Is it possible to make SPA only frontend (on Vue or React Js)?

Question

Frontend

I understand the question is stupid, but I want to make an analogue of some kind of documentation without reloading the page.
For I would like to develop in this topic, but so far it seems that this cannot be realized without a friend of the backend

Answer 1

the server is needed to save data in the form of files and read them,
but if the client is an application on electron or phonegap, then the client can save data in the file system, the
browser application can save data in the browser's memory - localStorage localForage

Answer 2

Do who's stopping you
https://github.com/vkorotenko/calcxactive