javascript

Chapter 9: Client Detection
Note that even though the Nokia Nseries phones report ” Safari ” in the user - agent string, the browser
is not actually Safari though it is WebKit - based. A simple check for ” NokiaN ” in the user - agent string, as
shown here, is sufficient to detect this series of phones:
system.nokiaN = ua.indexOf(“NokiaN”) > -1;
With this device information, it ’ s possible to figure out how the user is accessing a page with WebKit by
using code such as this:
if (client.engine.webkit){
if (client.system.macMobile){
//mac mobile stuff
} else if (client.nokiaN){
//nokia stuff
}
}
The last major mobile - device platform is Windows Mobile (also called Windows CE), which is available
on both Pocket PCs and smartphones. Since these devices are technically a Windows platform, the
Windows platform and operating system will return correct values. For Windows Mobile 5.0 and earlier,
the user - agent strings for these two devices were very similar, such as the following:
Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; PPC; 240x320)
Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; Smartphone; 176x220)
The first of these is mobile Internet Explorer 4.01 on the Pocket PC, and the second one is the same
browser on a smartphone. When the Windows operating system detection script is run against either of
these strings, client.win gets filled with ” CE ” , so detection for Windows Mobile can be done using this
value:
system.winMobile = (client.win == “CE”);
It ’ s not advisable to test for ” PPC ” or ” Smartphone ” in the string, because these tokens have been
removed in browsers on Windows Mobile later than 5.0. Oftentimes, simply knowing that the device is
using Windows Mobile is enough.
Identifying Game Systems
Another new area in which web browsers have become increasingly popular is on video game systems.
Both the Nintendo Wii and Playstation 3 have web browsers either built in or available for download.
The Wii browser is actually a custom version of Opera, designed specifically for use with the Wii
remote. The Playstation browser is custom and is not based on any of the rendering engines previously
mentioned. The user - agent strings for these browsers are as follows:
Opera/9.10 (Nintendo Wii;U; ; 1621; en)
Mozilla/5.0 (PLAYSTATION 3; 2.00)
The first user - agent string is Opera running on the Wii. It stays true to the original Opera user - agent
string (keep in mind that Opera on the Wii does not have identity - masking capabilities). The
second string is from a Playstation 3, which reports itself as Mozilla 5.0 for compatibility but doesn ’ t give
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