User Agent 字符串描述 :

FirefoxFirefox 4.0b10
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
Windows NT 6.1Operating System:
icon Windows 7
rv:2.0b10 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
4.0b10Firefox version
 
First visit: 2011.01.28 08:14
Last visit:2015.08.30 04:08

All Firefox user agent strings