Request.credentials

The credentials read-only property of the Request interface indicates whether the user agent should send cookies from the other domain in the case of cross-origin requests. This is similar to XHR’s withCredentials flag, but with three available values (instead of two):

• omit: Never send cookies.
• same-origin: Send cookies if the URL is on the same origin as the calling script.
• include: Always send cookies, even for cross-origin calls.

Syntax

var myCred = request.credentials;

Value

A RequestCredentials value.

Example

In the following snippet, we create a new request using the Request.Request() constructor (for an image file in the same directory as the script), then save the request credentials in a variable:

var myRequest = new Request('flowers.jpg');
var myCred = myRequest.credentials; // returns "omit" by default

Specifications

Browser compatibility

[1] This feature is implemented behind a preference.

See also

• ServiceWorker API
• HTTP access control (CORS)
• HTTP