HTMLAreaElement: referrerPolicy property
Baseline
Widely available
*
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.
* Some parts of this feature may have varying levels of support.
The
HTMLAreaElement.referrerPolicy
property reflect the HTML referrerpolicy attribute of the
<area> element defining which referrer is sent when fetching the
resource.
Value
A string; one of the following:
no-referrer-
The
Refererheader will be omitted entirely. No referrer information is sent along with requests. no-referrer-when-downgrade-
The URL is sent as a referrer when the protocol security level stays the same (e.g.HTTP→HTTP, HTTPS→HTTPS), but isn't sent to a less secure destination (e.g., HTTPS→HTTP).
origin-
Only send the origin of the document as the referrer in all cases. The document
https://example.com/page.htmlwill send the referrerhttps://example.com/. origin-when-cross-origin-
Send a full URL when performing a same-origin request, but only send the origin of the document for other cases.
same-origin-
A referrer will be sent for same-site origins, but cross-origin requests will contain no referrer information.
strict-origin-
Only send the origin of the document as the referrer when the protocol security level stays the same (e.g., HTTPS→HTTPS), but don't send it to a less secure destination (e.g., HTTPS→HTTP).
strict-origin-when-cross-origin(default)-
This is the user agent's default behavior if no policy is specified. Send a full URL when performing a same-origin request, only send the origin when the protocol security level stays the same (e.g., HTTPS→HTTPS), and send no header to a less secure destination (e.g., HTTPS→HTTP).
unsafe-url-
Send a full URL when performing a same-origin or cross-origin request. This policy will leak origins and paths from TLS-protected resources to insecure origins. Carefully consider the impact of this setting.
Examples
<img usemap="#my-map" width="100" height="100" src="/img/logo@2x.png" />
<map id="my-map" name="my-map"></map>
const elt = document.createElement("area");
elt.href = "/img2.png";
elt.shape = "rect";
elt.referrerPolicy = "no-referrer";
elt.coords = "0,0,100,100";
const map = document.getElementById("my-map");
map.appendChild(elt);
// When clicked, the area's link will not send a referrer header.
Specifications
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| HTML # dom-area-referrerpolicy |
Browser compatibility
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referrerPolicy
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no-referrer-when-downgrade
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origin-when-cross-origin
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unsafe-url
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- Uses a non-standard name
- Has more compatibility info.