User Agent 字符串描述 :

FirefoxFirefox 4.0b11pre
MozillaMozillaProductSlice. Claims to be a Mozilla based user agent, which is only true for Gecko browsers like Firefox and Netscape. For all other user agents it means 'Mozilla-compatible'. In modern browsers, this is only used for historical reasons. It has no real meaning anymore
5.0Mozilla version
Macintosh Platform
Intel Mac OS X 10.6Operating System:
OS X
Version 10.6 : Snow Leopard
running on a Intel CPU
rv:2.0b11pre CVS Branch Tag
The version of Gecko being used in the browser
Gecko Gecko engine inside
20110126 Build Date:
the date the browser was built
FirefoxName :
Firefox
4.0b11preFirefox version
 
First visit: 2011.01.27 05:16
Last visit:2015.10.08 05:52

All Firefox user agent strings