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.
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: Only send cookies if the URL is on the same origin as the calling script.
include: Always send cookies, even for cross-origin calls.
var myCred = request.credentials;
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
The definition of 'credentials' in that specification.
|Living Standard||Initial definition|
|Feature||Chrome||Edge||Firefox (Gecko)||Internet Explorer||Opera||Safari (WebKit)|
|Feature||Android||Edge||Firefox Mobile (Gecko)||Firefox OS (Gecko)||IE Phone||Opera Mobile||Safari Mobile||Chrome for Android|
|Basic support||No support||(Yes)||No support||No support||No support||No support||No support||No support|
 This feature is implemented behind a preference.