Allows web sites to register themselves as possible handlers for content of a particular MIME type.
window.navigator.registerContentHandler(mimeType, uri, title);
mimeTypeis the desired MIME type as a string.
uriis the URI to the handler as a string.
titleis the title of the handler presented to the user as a string.
navigator.registerContentHandler("application/vnd.mozilla.maybe.feed", "http://www.example.tld/?foo=%s", "My Feed Reader");
For Firefox 2 and above, only the
application/rss+xml MIME types are supported. All values have the same effect, and the registered handler will receive feeds in all Atom and RSS versions (see bug 391286).
WHATWG's Web Applications 1.0 工作草案