Recommendation: The latest RSS 2.0 specification

RSS is the abbreviation of Really Simple Syndication (for rss2.0, the abbreviation for these three words, for rss1.0 is the RDF Site summary abbreviation, 1.0 and 2.0 go two systems).

RSS is based on XML, and all RSS must follow the XML 1.0 specification published on the Web site.

in an RSS document, the root element is, with a prerequisite attribute version indicating the RSS specification that the document follows, and if the RSS document follows this specification, the version value must be 2.0

theelement has only one child element that contains some information about the channel. The channel (channel) is the entire blog, items (item) refers to an article or journal (also known as post).

RSS2.0 element Channel List of child elements

Elements (Element)	Description (Description)	Range	Importance	Example (Example)
Title	Channel name		Necessary	goupstate.com News Headlines
Link	The URL of the channel		Necessary	http://www.goupstate.com/
Description	Description of the Channel		Necessary	The latest news from Goupstate.com, a Spartanburg herald-journal Web site.
Language	The language that the Channel article uses,	Available in Netscape or the list of the consortium recommended	Optional	En-US
Copyright	Copyright Description of Channel content		Optional	Copyright 2002, Spartanburg Herald-journal
Managingeditor	The editor's email		Optional	Geo@herald.com (George Matesky)
Webmaster	Responsible for the channel technical Affairs webmaster Email		Optional	Betty@herald.com (Betty Guernsey)
pubdate	Channel content release date, format follows RFC822 format (year can be 2 or 4 digits)		Optional	Sat, Modified SEP 2002 00:00:01 GMT
Lastbuilddate	Last modified date of channel content		Optional	Sat, Modified SEP 2002 09:42:31 GMT
Category	Specify one or more categories to which the channel belongs		Optional	Newspapers
Generator	The program name that generated the channel		Optional	Mightyinhouse Content System v2.3
Docs	A URL that points to the format description used for the RSS file		Optional	Http://blogs.law.harvard.edu/tech/rss
cloud	allows processes to register with a cloud to is notified of updates to the channel, implementing a lightweight PU Blish-subscribe protocol for RSS feeds. More info here.		optional	Ttl	Validity period to indicate the maximum time that the channel can be cached	Minutes as Units Optional60
Image	Specifies a GIF or JPEG or PNG picture to display with the channel		Optional
Rating	The rating of this channel (mainly refers to adults, restrictions, children, etc.)		Optional
TextInput	Specify a text input box for user input, the specific information and function is undecided.		Optional
Skiphours	Tip The news aggregator, those hours it can skip.		Optional
Skipdays	Hint news aggregator, those days it can skip.		Optional