I wanna understand the extent of node js?
Is it used only for mobile web apps to handle server side or can it be used to develop a full fledged web app for all device configuration(like replacing ruby and rails). I found some examples but all seems to be mobile web apps.
Is it like companies like Aibnb, Linkeddin... etc developed two sites, one with nodejs as backend and other with ruby and rails and depending on the device they route to that site. Please give me some favourable inputs so that my confusion can be calmed.