JQUERY1.6 Method 4: browser Detection

UserAgent = navigator. userAgent, // The Chinese name of the User Agent is the User Agent (UA), which is a special string header, the server can identify the operating system and version, CPU type, browser and version, browser rendering engine, browser language, and browser plug-in used by the customer.

The navigator. userAgent of Each browser is as follows:

// Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1 -- safari

// Mozilla/5.0 (Windows NT 5.1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.220 Safari/535.1 -- chrome

// Opera/9.80 (Windows NT 5.1; U; Edition Next; zh-cn) Presto/2.8.158 Version/11.50 -- opera

// Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1 ;. net clr 2.0.50727 ;. net clr 3.0.20.6.2152 ;. net clr 3.5.30729; InfoPath.1 ;. NET4.0C ;. NET4.0E; InfoPath.2) --- ie

// Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv: 1.9.2.24) Gecko/20111103 Firefox/3.6.24 -- firefox



// Match the regular expression in the response Browser

Rwebkit =/(webkit) [\/] ([\ w.] +)/, // webkit
Ropera =/(opera )(? :. * Version )? [\/] ([\ W.] +)/, // opera
Rmsie =/(msie) ([\ w.] +)/, // ie
Rmozilla =/(mozilla )(? :.*? Rv :( [\ w.] + ))? //, // Mozilla



Through userAgent, we can see that chrome can be matched through the following method, but because like safari, both have "safari", we can put it before rwebkit.

Rchrome =/(Chrome) [\/] ([\ w.] + )/

Firefox can also do the same and put it before rmozilla for judgment.

Rfirefox =/(Firefox) [\/] ([\ w.] + )/



UaMatch: function (ua) {// mainly obtains the type and version of the browser.
Ua = ua. toLowerCase (); // The parameter is navigator. userAgent. Converts the string to lowercase. Of course, you can declare the string match to be case insensitive (for example,/(webkit) [\/] ([\ w.] +)/I)

Var match = rwebkit.exe c (ua) |
Ropera.exe c (ua) |
Rmsie.exe c (ua) |
Ua. indexOf ("compatible") <0 & rmozilla.exe c (ua) |
[]; // Because exec is used for matching, the returned result is a full match and a submatch of the response, for example,/(Chrome) [\/] ([\ w.] +)/, match will return Chrome/13.0.782.220, match [1] to get chrome, match [2] to get 13.0.782.220;

Return {browser: match [1] | "", version: match [2] | "0 "};
}

// UaMatch is a method in jQuery. You can call and save the browser Model browser and version here.

BrowserMatch = jQuery. uaMatch (userAgent); // call uaMatch and return the object return {browser: match [1] | "", version: match [2] | "0 "};
If (browserMatch. browser ){
JQuery. browser [browserMatch. browser] = true; // chrome \ safari \ opera \ msie \ mozilla. browser. opera to determine whether it is an operabrowser (true, false)

JQuery. browser. version = browserMatch. version; // browser version
}


If (jQuery. browser. webkit ){
JQuery. browser. safari = true; // because safari uses the AppleWebKit engine, because both safari and chrome have safari, we are doing additional processing.
}