Check value from a JSON response coming from an API backend


I would like to know if it’s possible to check data on a page in function of the response (JSON format) coming from an API (backend side). I don’t know exactly how to check that (condtion on the JSON result).

Could you please help me with that ?

@ThanhTo Hi, do you know if it’s possible easily to check values of a drop-down list by looping the items of the drop-down list (values linked to an http request (results retrieve in Json format). Or directly read the json response and do the test on each element ? Thanks for your help