What does fetch() return?
returning a promise which is fulfilled once the response is available.
What is the default request method used by fetch()?
GET
How do you specify the request method (GET, POST, etc.) when calling fetch?
method: ‘POST’, // *GET, POST, PUT, DELETE, etc.
MDN doc
https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch