Saturday, June 15, 2002 11:19 PM
Just send back a status code of 204 (No Content). For example,:
It's meant to indicate that the request was received, processed successfully (it's between 200 and 299), and there is no new content but possibly some new meta information (i.e. header information). The browser is not allowed to change the document view. I know for a fact that Mozilla (and, therefore, Netscape 6+) are compliant with the specification in handling 204's, but other browsers may not handle the response correctly.
From the HTTP Specification (RFC 2616):
10.2.5 204 No Content
The server has fulfilled the request but does not need to return an
entity-body, and might want to return updated metainformation. The
response MAY include new or updated metainformation in the form of
entity-headers, which if present SHOULD be associated with the
If the client is a user agent, it SHOULD NOT change its document view
from that which caused the request to be sent. This response is
primarily intended to allow input for actions to take place without
causing a change to the user agent's active document view, although
any new or updated metainformation SHOULD be applied to the document
currently in the user agent's active view.
The 204 response MUST NOT include a message-body, and thus is always
terminated by the first empty line after the header fields.