ReadonlybodyReadonlybodyReadonlycacheReturns the cache mode associated with request, which is a string indicating how the request will interact with the browser's cache when fetching.
ReadonlycredentialsReturns the credentials mode associated with request, which is a string indicating whether credentials will be sent with the request always, never, or only when sent to a same-origin URL.
ReadonlydestinationReturns the kind of resource requested by request, e.g., "document" or "script".
ReadonlyheadersReturns a Headers object consisting of the headers associated with request. Note that headers added in the network layer by the user agent will not be accounted for in this object, e.g., the "Host" header.
ReadonlyintegrityReturns request's subresource integrity metadata, which is a cryptographic hash of the resource being fetched. Its value consists of multiple hashes separated by whitespace. [SRI]
ReadonlykeepaliveReturns a boolean indicating whether or not request can outlive the global in which it was created.
ReadonlymethodReturns request's HTTP method, which is "GET" by default.
ReadonlymodeReturns the mode associated with request, which is a string indicating whether the request will use CORS, or will be restricted to same-origin URLs.
ReadonlyredirectReturns the redirect mode associated with request, which is a string indicating how redirects for the request will be handled during fetching. A request will follow redirects by default.
ReadonlyreferrerReturns the referrer of request. Its value can be a same-origin URL if explicitly set in init, the empty string to indicate no referrer, and "about:client" when defaulting to the global's default. This is used during fetching to determine the value of the Referer header of the request being made.
ReadonlyreferrerReturns the referrer policy associated with request. This is used during fetching to compute the value of the request's referrer.
ReadonlysignalReturns the signal associated with request, which is an AbortSignal object indicating whether or not request has been aborted, and its abort event handler.
ReadonlyurlReturns the URL of request as a string.
Extends the native Request class to be more flexible.
Also firefox Web Workers remove the request body though weirdly the main thread doesn't.