This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The Response() constructor creates a new Response object.


var myResponse = new Response(body, init);


body Optional
An object defining a body for the response. This can be one of:
init Optional
An options object containing any custom settings that you want to apply to the response. The possible options are:
  • status: The status code for the reponse, e.g., 200.
  • statusText: The status message associated with the staus code, e.g., OK.
  • headers: Any headers you want to add to your response, contained within a Headers object or object literal of ByteString key/value pairs (see HTTP headers for a reference).


In our Fetch Response example (see Fetch Response live) we create a new Response object using the constructor, passing it a new Blob as a body, and an init object containing a custom status and statusText:

var myBlob = new Blob();
var init = { "status" : 200 , "statusText" : "SuperSmashingGreat!" };
var myResponse = new Response(myBlob,init);


Specification Status Comment
The definition of 'Response()' in that specification.
Living Standard Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 42.0
39 (39)
No support


No support
body parameter accepts ReadableByteStream  52.0     39  
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS (Gecko) IE Phone Opera Mobile Safari Mobile Chrome for Android
Basic support No support 42.0
No support No support No support 29 No support 42.0
body parameter accepts ReadableByteStream No support 52.0       29   52.0

[1] This feature is implemented behind a preference.

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.