User Agent 字符串描述 :

FirefoxFirefox 31.0
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 6.1Operating System:
icon Windows 7
WOW64(Windows-On-Windows 64-bit) A 32-bit application is running on a 64-bit processor
rv:31.0 CVS Branch Tag
The version of Gecko being used in the browser
Gecko Gecko engine inside
20130401 Build Date:
the date the browser was built
FirefoxName :
Firefox
31.0Firefox version
 
First visit: 2014.11.22 03:09
Last visit:2015.11.03 02:44

All Firefox user agent strings