angular-docs-cn/modules/angular2/src/http/enums.ts

export enum RequestModesOpts {Cors, NoCors, SameOrigin};

export enum RequestCacheOpts {Default, NoStore, Reload, NoCache, ForceCache, OnlyIfCached};

export enum RequestCredentialsOpts {Omit, SameOrigin, Include};

export enum RequestMethods {GET, POST, PUT, DELETE, OPTIONS, HEAD, PATCH};

export enum ReadyStates {UNSENT, OPEN, HEADERS_RECEIVED, LOADING, DONE, CANCELLED};

export enum ResponseTypes {Basic, Cors, Default, Error, Opaque}