The format and version of the feed.
Here is the complete list of known feed types and versions that may be returned in version:
atom |
Atom (unknown or unrecognized version) |
atom01 |
Atom 0.1 |
atom02 |
Atom 0.2 |
atom03 |
Atom 0.3 |
atom10 |
Atom 1.0 |
cdf |
CDF |
rss |
RSS (Rich Site Summary) (unknown or unrecognized version) |
rss090 |
RSS 0.90 |
rss091n |
Netscape RSS 0.91 |
rss091u |
Userland RSS 0.91 |
rss092 |
RSS 0.92 |
rss093 |
RSS 0.93 |
rss094 |
RSS (Rich Site Summary) 0.94 (no accurate specification is known to exist) |
rss10 |
RSS 1.0 |
rss20 |
RSS 2.0 |
If the feed type is completely unknown, version will be an empty string.
Tip
This element always exists, although it may be an empty string if the version can not be determined.
- The Myth of RSS compatibility
Mark Pilgrim's excellent analysis of the extraordinary variety of incompatibilities each version of "RSS" introduced.