about URI scheme
Internal URI scheme / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about About URI scheme?
Summarize this article for a 10 year old
about is an internal URI scheme (also known as a "URL scheme" or, erroneously, "protocol") implemented in various Web browsers to reveal internal state and built-in functions. It is an IANA officially registered scheme, and is standardized.[1]
This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)
|
In early versions of Netscape, any URI beginning with about:
that wasn't recognized as a built-in command would simply result in the text after the colon being displayed. Similarly, in early versions of Internet Explorer, about:
followed by a string of HTML (e.g. about:<em>hello world</em>
) would render that string as though it were the source of the page — thus providing a similar (though more limited) facility to the data: URI scheme defined by RFC 2397. Still other versions of Netscape would return various phrases in response to an unknown about
URI, including "Whatchew talkin' 'bout, Willis?" (a catch phrase from the TV show Diff'rent Strokes) or "Homey don't play dat!" (from a recurring skit on the TV show In Living Color).[2][3]
The most commonly implemented about
URIs are about:blank
, which displays a blank HTML document, and simply about:
, which may display information about the browser. Some browsers use URIs beginning with the name of the browser for similar purposes, and many about
URIs will be translated into the appropriate URI if entered. Examples are opera
(Opera) or chrome
(Google Chrome). An exception is about:blank
, which is not translated.