The HTML <a> referrerpolicy attribute is used to specify the reference information that will be sent to the server when the user clicks on a hyperlink.
Syntax:
<a referrerpolicy="no-referrer|no-referrer-when-downgrade|origin|
origin-when-cross-origin|same-origin|
strict-origin-when-cross-origin|unsafe-url"> Attribute values:
- no-referrer: It specifies that no reference information will be sent along with a request.
- no-referrer-when-downgrade: It has a default value. It specifies that reference header will not be sent to origins without HTTPS.
- origin: It specifies to only send the origin of the document as the referrer in all cases.
- origin-when-cross-origin: It sends the origin, path, and query string when performing a same-origin request, but only sends the origin of the document for other cases.
- same-origin: It specifies that the referrer will be sent for same-site origins, but cross-origin requests will send no referrer information.
- strict-origin-when-cross-origin: It sends the origin, path, and query string when performing a same-origin request, only sends the origin when the protocol security level stays the same while performing a cross-origin request (HTTPS/HTTPS), and send no header to any less-secure destinations (HTTPS/HTTP).
- unsafe-url: It sends an origin, path, and query string as a piece of reference information but does not include password and username.
Example:
HTML
<!DOCTYPE html><html>
<head>
<title>HTML a referrerpolicy Attribute</title>
</head>
<body>
<h2>
GeeksForGeeks
</h2>
<h2>
HTML Anchor referrerpolicy Attribute
</h2>
<p>Welcome to
<a rel="noopener"
referrerpolicy="no-referrer">
GeeksforGeeks
</a>
</p>
</body>
</html>
|
Output:
Supported Browsers:
- Google Chrome 51.0
- Internet Explorer Not Supported
- Firefox 50.0
- Safari 14.0
- Opera 38.0
- Edge 79.0