The type
read-only property of the Response
interface contains the type of the response. It can be one of the following:
-
basic
: Normal, same origin response, with all headers exposed except "Set-Cookie". -
cors
: Response was received from a valid cross-origin request. Certain headers and the body may be accessed. -
error
: Network error. No useful information describing the error is available. The Response's status is 0, headers are empty and immutable. This is the type for a Response obtained fromResponse.error()
. -
opaque
: Response for "no-cors" request to cross-origin resource. Severely restricted. -
opaqueredirect
: The fetch request was made withredirect: "manual"
. The Response's status is 0, headers are empty, body is null and trailer is empty.
Note: An "error" Response never really gets exposed to script: such a response to a fetch()
would reject the promise.