Processing an API request in a loop?

Question

JavaScript

How to access Itemlength variable outside of xhr.onload function in XMLHttpRequest request? So that I can use it in a loop to change the url parameters in this code:



Also in the Fetch request. How can the Itemlength be accessed outside of .then ?

Answer 1

There is no code, but in general, the cycles are synchronous, while the requests are not, therefore, while the cycle is running, without waiting for a response from the server, there is no way to get this data from the outside.
Therefore, chains of calls are made, i.e. expect a response, call another function with that response, and that function, in turn, can call other functions, including itself, to get a recursion (loop).