JavaScript Response : Object

constructor

Represents a response from a web request initiated by fetch(). fetch(), Request and Response are a new, low level replacement for XMLHttpRequest.

Spec

Constructors

new Response([body = null : Object, [init : Object]]) : Response

init : {

status	Number
statusText	String
headers	Object

}

body must be one of ArrayBuffer, ArrayBufferView, Blob, FormData, ReadableStream, String, or URLSearchParams.

Instance Properties

body : ReadableStream readonly

Example:

const res = await fetch('/fireworks.ogv');
const reader = res.body.getReader();

let result;
while (!(result = await reader.read()).done) {
  console.log('chunk size:', result.value.byteLength);
}

Run

Results:

headers : Headers readonly

ok : Boolean readonly

true if the server returned a successful status code (200-299).

Example:

const res1 = await fetch('https://httpbin.org/status/200');
console.log(res1.ok);

const res2 = await fetch('https://httpbin.org/status/404');
console.log(res2.ok);

Run

Results:

redirected : Boolean readonly

true if the server returned a redirect status code (301, 302, etc).

Example:

const res1 = await fetch('https://httpbin.org/status/200');
console.log(res1.redirected);

const res2 = await fetch('https://httpbin.org/status/301');
console.log(res2.redirected);

Run

Results:

status : Number readonly

The http status code for the request. See statusText for a description of the code.

Example:

const res1 = await fetch('https://httpbin.org/status/200');
console.log(res1.status);

const res2 = await fetch('https://httpbin.org/status/404');
console.log(res2.status);

Run

Results:

statusText : String readonly

A description of the status return code.

Example:

const res1 = await fetch('https://httpbin.org/status/200');
console.log(res1.statusText);

const res2 = await fetch('https://httpbin.org/status/404');
console.log(res2.statusText);

Run

Results:

trailer : Promise<Headers> readonly

type : String readonly

Will be one of: 'basic', 'cors', 'default', 'error', 'opaque', 'opaqueredirect'.

url : String readonly

Instance Methods

arrayBuffer() : Promise<ArrayBuffer>

blob() : Promise<Blob>

clone() : Response

formData() : Promise<FormData>

json() : Promise<Object>

text() : Promise<String>

Response Methods

error() : Response

redirect(url : String, [status = 302 : Number]) : Response

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