Optional bodyOptional cacheOptional credentialsA string indicating whether credentials will be sent with the request always, never, or only when sent to a same-origin URL. Sets request's credentials.
Optional headersA Headers object, an object literal, or an array of two-item arrays to set request's headers.
Optional integrityA cryptographic hash of the resource to be fetched by request. Sets request's integrity.
Optional keepaliveA boolean to set request's keepalive.
Optional methodA string to set request's method.
Optional modeA string to indicate whether the request will use CORS, or will be restricted to same-origin URLs. Sets request's mode.
Optional paramsOptional redirectA string indicating whether request follows redirects, results in an error upon encountering a redirect, or returns the redirect (in an opaque fashion). Sets request's redirect.
Optional referrerA string whose value is a same-origin URL, "about:client", or the empty string, to set request's referrer.
Optional referrerA referrer policy to set request's referrerPolicy.
Optional signalAn AbortSignal to set request's signal.
Optional windowCan only be null. Used to disassociate request from any Window.
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A string indicating how the request will interact with the browser's cache to set request's cache.