The JavaScript fetch() method is used to request data from a server. The request can be of any type of API that returns the data in JSON or XML. The fetch() method requires one parameter, the URL to request, and returns a promise.

Parameters:

• URL: It is the URL to which the request is to be made.
• Options: It is an array of properties. It is an optional parameter.

Return Value:

It returns a promise whether it is resolved or not. The return data can be of the format JSON or XML. It can be an array of objects or simply a single object.