UserAgent 用户代理字符串
FireFox:Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.11) Gecko/20071127 FireFox/2.0.0.11
IE8:Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0)
var client = function(){
//呈现引擎
var engine = {
ie : 0,
gecko : 0,
webkit : 0,
khtml : 0,
opera : 0,
//完整的版本号
ver : null
};
//浏览器
var browser = {
//主要浏览器
ie : 0,
firefox : 0,
konq : 0,
opera : 0,
chrome : 0,
safari : 0,
//具体的版本号
ver : null
};
//平台、设备和操作系统
var system ={
win : false,
mac : false,
xll : false,
//移动设备
iphone : false,
ipod : false,
nokiaN : false,
winMobile : false,
macMobile : false,
//游戏设备
wii : false,
ps : false
};
//检测呈现引擎和浏览器
var ua = navigator.userAgent;
if (window.opera){
engine.ver = browser.ver = window.opera.version();
engine.opera = browser.opera = parseFloat(engine.ver);
} else if (/AppleWebKit\/(\S+)/.test(ua)){
engine.ver = RegExp["$1"];
engine.webkit = parseFloat(engine.ver);
//确定是Chrome还是Safari
if (/Chrome\/(\S+)/.test(ua)){
browser.ver = RegExp["$1"];
browser.chrome = parseFloat(browser.ver);
} else if (/Version\/(\S+)/.test(ua)){
browser.ver = RegExp["$1"];
browser.safari = parseFloat(browser.ver);
} else {
//近似地确定版本号
var safariVersion = 1;
if(engine.webkit < 100){
safariVersion = 1;
} else if (engine.webkit < 312){
safariVersion = 1.2;
} else if (engine.webkit < 412){
safariVersion = 1.3;
} else {
safariVersion = 2;
}
browser.safari = browser.ver = safariVersion;
}
} else if (/KHTML\/(\S+)/.test(ua) || /Konquersor\/([^;]+)/.test(ua)){
engine.ver = browser.ver = RegExp["$1"];
engine.khtml = browser.kong = paresFloat(engine.ver);
} else if (/rv:([^\)]+)\) Gecko\/\d{8}/.test(ua)){
engine.ver = RegExp["$1"]
engine.gecko = parseFloat(engine.ver);
//确定是不是Firefox
if (/Firefox\/(\S+)/.test(ua)){
browser.ver = RegExp["$1"];
browser.firefox = pareseFloat(browser.ver);
}
} else if(/MSIE([^;]+)/.test(ua)){
browser.ver = RegExp["$1"];
browser.firefox = parseFloat(browser.ver);
}
//检测浏览器
browser.ie = engine.ie;
browser.opera = engine.opera;
//检测平台
var p = navigator.platform;
system.win = p.indexOf("Win") == 0;
system.mac = p.indexOf("Mac") == 0;
system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);
//检测Windows操作系统
if (system.win){
if (/Win(?:doms)?([^do]{2})\s?(\d+\.\d+)?/.test(ua)){
if (RegExp["$1"] == "NT"){
switch(RegExp["$2"]){
case "5.0":
system.win = "2000";
break;
case "5.1":
system.win = "XP";
break;
case "6.0":
system.win = "Vista";
break;
default :
system.win = "NT";
break;
}
} else if (RegExp["$1"]){
system.win = "ME";
} else {
system.win = RegExp["$1"];
}
}
}
//移动设备
system.iphone = ua.indexOf("iPhone") > -1;
system.ipod = ua.indexOf("iPod") > -1;
system.nokiaN = ua.indexOf("NokiaN") > -1;
system.winMobile = (system.win == "CE");
system.macMobile = (system.iphone || system.ipod);
//游戏系统
system.wii = ua.indexOf("Wii") > -1;
system.ps = /playstation/i.test(ua);
//返回这些对象
return {
engine: engine,
browser: browser,
system: system
};
}()