![]() ![]() "origin" – only send the origin in Referer, not the full page URL, e.g. ![]() "no-referrer-when-downgrade" – the default value: full Referer is always sent, unless we send a request from HTTPS to HTTP (to the less secure protocol).Possible values are described in the Referrer Policy specification: Unlike the referrer option that allows to set the exact Referer value, referrerPolicy tells the browser general rules for each request type. Request from HTTPS to HTTP (from safe to unsafe protocol).The referrerPolicy option sets general rules for Referer. we can set any Referer header, but only within the current origin To send no referrer, set an empty string: The referrer option allows to set any Referer (within the current origin) or remove it. In most scenarios, it’s not important at all, sometimes, for security purposes, it makes sense to remove or shorten it. Usually that header is set automatically and contains the url of the page that made the request. These options govern how fetch sets the HTTP Referer header. Now let’s explore the remaining capabilities. The signal option is covered in Fetch: Abort. We fully covered method, headers and body in the chapter Fetch. Signal: undefined, // AbortController to abort request ReferrerPolicy: "no-referrer-when-downgrade", // no-referrer, origin, same-origin.Ĭredentials: "same-origin", // omit, includeĬache: "default", // no-store, reload, no-cache, force-cache, or only-if-cached Referrer: "about:client", // or "" to send no Referer header, "Content-Type": "text/plain charset=UTF-8"īody: undefined, // string, FormData, Blob, BufferSource, or URLSearchParams the content type header value is usually auto-set Method: "GET", // POST, PUT, DELETE, etc. ![]()
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