User Agent 字符串描述 :

FirefoxFirefox 5.0
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 6.1.1Operating System:
icon Windows NT
rv:5.0 CVS Branch Tag
The version of Gecko being used in the browser
Gecko Gecko engine inside
20100101 Build Date:
the date the browser was built
FirefoxName :
Firefox
5.0Firefox version
 
First visit: 2011.06.23 10:23
Last visit:2015.11.07 05:04

All Firefox user agent strings