How to work with data from the server (js)?

Question

JavaScript

I don't know how to ask the right question.
Data comes from the server in the form of an array with data, inside the array is the usual json. So, based on this array, I want to create a new array.

Answer 1

https://developer.mozilla.org/en-US/docs/Web/JavaS...
https://developer.mozilla.org/en-US/docs/Web/JavaS...
etc.