HTML <script> referrerpolicy- Attribut
Beispiel
Legen Sie die Referrer-Richtlinie für ein Skript fest:
<script src="myscripts.js" referrerpolicy="origin"></script>
Definition und Verwendung
Das referrerpolicy
Attribut gibt an, welche Referrer-Informationen beim Abrufen eines Skripts gesendet werden sollen.
Browser-Unterstützung
Die Zahlen in der Tabelle geben die erste Browserversion an, die das Attribut vollständig unterstützt.
Attribute | |||||
---|---|---|---|---|---|
referrerpolicy | 70.0 | 79.0 | 65.0 | No | Yes |
Syntax
<script referrerpolicy="no-referrer|no-referrer-when-downgrade|origin|origin-when-cross-origin|same-origin|strict-origin-when-cross-origin|unsafe-url">
Attributwerte
Value | Description |
---|---|
no-referrer | No referrer information is sent |
no-referrer-when-downgrade | Default. Sends the origin, path, and query string if the protocol security level stays the same or is higher (HTTP to HTTP, HTTPS to HTTPS, HTTP to HTTPS is ok). Sends nothing to less secure level (HTTPS to HTTP is not ok) |
origin | Sends the origin (scheme, host, and port) of the document |
origin-when-cross-origin | Sends the origin of the document for cross-origin request. Sends the origin, path, and query string for same-origin request |
same-origin | Sends a referrer for same-origin request. Sends no referrer for cross-origin request |
strict-origin-when-cross-origin | Sends the origin if the protocol security level stays the same or is higher (HTTP to HTTP, HTTPS to HTTPS, and HTTP to HTTPS is ok). Sends nothing to less secure level (HTTPS to HTTP) |
unsafe-url | Sends the origin, path, and query string (regardless of security). Use this value carefully! |
❮ HTML <a>-Tag