How to correctly implement a web application entirely on ajax?

Question

JavaScript

Given: A
dynamic, multi-page web application that displays real-time data.
I don't understand the logic of how it should look like.
I imagine the following:
there is a separate rest api that always returns json
there is a separate controller that is responsible for the initial generation of pages (i.e. the main framework connects all js scripts, styles, etc.) does not manipulate any data
and there is a client part that pulls the api and updates the data.
Maybe I did not quite correctly explain the essence, tk. never dealt with that.
Am I correct, or is there any other way?

Answer 1

Well, you imagine everything right, then google single page apps.
With the backend, everything is approximately as you described, on the frontend you will need a Javascript framework sharpened for SPA development (Ember, Angular, Backbone, React + Flux). Well, that is, you can write your bike, but it makes no sense.