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HttpRequest

class final

An outgoing HTTP request with an optional typed body.

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class HttpRequest<T> {
  constructor(method: string, url: string, third?: T | { headers?: HttpHeaders; context?: HttpContext; reportProgress?: boolean; params?: HttpParams; responseType?: "arraybuffer" | "blob" | "text" | "json"; withCredentials?: boolean; }, fourth?: { headers?: HttpHeaders; context?: HttpContext; reportProgress?: boolean; params?: HttpParams; responseType?: "arraybuffer" | "blob" | "text" | "json"; withCredentials?: boolean; })
  body: T | null
  headers: HttpHeaders
  context: HttpContext
  reportProgress: boolean
  withCredentials: boolean
  responseType: 'arraybuffer' | 'blob' | 'json' | 'text'
  method: string
  params: HttpParams
  urlWithParams: string
  url: string
  serializeBody(): ArrayBuffer | Blob | FormData | string | null
  detectContentTypeHeader(): string | null
  clone(update: { headers?: HttpHeaders; context?: HttpContext; reportProgress?: boolean; params?: HttpParams; responseType?: "arraybuffer" | "blob" | "text" | "json"; withCredentials?: boolean; body?: any; method?: string; url?: string; setHeaders?: { ...; }; setParams?: { ...; }; } = {}): HttpRequest<any>
}

Description

HttpRequest represents an outgoing request, including URL, method, headers, body, and other request configuration options. Instances should be assumed to be immutable. To modify a HttpRequest, the clone method should be used.

Constructor

3 overloads...

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Overload #1

constructor(method: "DELETE" | "GET" | "HEAD" | "JSONP" | "OPTIONS", url: string, init?: { headers?: HttpHeaders; context?: HttpContext; reportProgress?: boolean; params?: HttpParams; responseType?: "arraybuffer" | "blob" | "text" | "json"; withCredentials?: boolean; })

Parameters
method "DELETE" | "GET" | "HEAD" | "JSONP" | "OPTIONS"
url string
init object

Optional. Default is undefined.
Overload #2

constructor(method: "POST" | "PUT" | "PATCH", url: string, body: T, init?: { headers?: HttpHeaders; context?: HttpContext; reportProgress?: boolean; params?: HttpParams; responseType?: "arraybuffer" | "blob" | "text" | "json"; withCredentials?: boolean; })

Parameters
method "POST" | "PUT" | "PATCH"
url string
body T
init object

Optional. Default is undefined.
Overload #3

constructor(method: string, url: string, body: T, init?: { headers?: HttpHeaders; context?: HttpContext; reportProgress?: boolean; params?: HttpParams; responseType?: "arraybuffer" | "blob" | "text" | "json"; withCredentials?: boolean; })

Parameters
method string
url string
body T
init object

Optional. Default is undefined.

Properties

Property Description
body: T | null Read-Only

The request body, or null if one isn't set.

Bodies are not enforced to be immutable, as they can include a reference to any user-defined data type. However, interceptors should take care to preserve idempotence by treating them as such.
headers: HttpHeaders Read-Only

Outgoing headers for this request.
context: HttpContext Read-Only

Shared and mutable context that can be used by interceptors
reportProgress: boolean Read-Only

Whether this request should be made in a way that exposes progress events.

Progress events are expensive (change detection runs on each event) and so they should only be requested if the consumer intends to monitor them.
withCredentials: boolean Read-Only

Whether this request should be sent with outgoing credentials (cookies).
responseType: 'arraybuffer' | 'blob' | 'json' | 'text' Read-Only

The expected response type of the server.

This is used to parse the response appropriately before returning it to the requestee.
method: string Read-Only

The outgoing HTTP request method.
params: HttpParams Read-Only

Outgoing URL parameters.

To pass a string representation of HTTP parameters in the URL-query-string format, the HttpParamsOptions' fromString may be used. For example:

new HttpParams({fromString: 'angular=awesome'})
urlWithParams: string Read-Only

The outgoing URL with all URL parameters set.
url: string Read-Only Declared in Constructor

Methods

serializeBody()

Transform the free-form body into a serialized format suitable for transmission to the server.

serializeBody(): ArrayBuffer | Blob | FormData | string | null

Parameters

There are no parameters.

Returns

ArrayBuffer | Blob | FormData | string | null
detectContentTypeHeader()

Examine the body and attempt to infer an appropriate MIME type for it.

detectContentTypeHeader(): string | null

Parameters

There are no parameters.

Returns

string | null

If no such type can be inferred, this method will return null.
clone()

3 overloads...

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Overload #1

clone(): HttpRequest<T>

Parameters

There are no parameters.

Returns

HttpRequest<T>

Overload #2

clone(update: { headers?: HttpHeaders; context?: HttpContext; reportProgress?: boolean; params?: HttpParams; responseType?: "arraybuffer" | "blob" | "text" | "json"; withCredentials?: boolean; body?: T; method?: string; url?: string; setHeaders?: { ...; }; setParams?: { ...; }; }): HttpRequest<T>

Parameters
update object
Returns

HttpRequest<T>

Overload #3

clone<V>(update: { headers?: HttpHeaders; context?: HttpContext; reportProgress?: boolean; params?: HttpParams; responseType?: "arraybuffer" | "blob" | "text" | "json"; withCredentials?: boolean; body?: V; method?: string; url?: string; setHeaders?: { ...; }; setParams?: { ...; }; }): HttpRequest<V>

Parameters
update object
Returns

HttpRequest<V>

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Licensed under the Creative Commons Attribution License 4.0.
https://v12.angular.io/api/common/http/HttpRequest