var client = function () {
//呈现引擎
var engine = {
ie:0,
gecko:0,
webkit:0,
khtml:0,
opera:0,
ver:null //具体版本号
};
//浏览器
var browser = {
//主要浏览器
ie:0,
firefox:0,
kong:0,
opera:0,
chrome:0,
safari:0,
ver:null //具体的版本
};
//平台，设备和操作系统
var system = {
win:false,
mac:false,
x11:false,
//移动设备
iphone:false,
ipod:false,
nokiaN:false,
winMobile:false,
macMobile:false,
//游戏系统
wii:false,
ps:false
};
//在此检测呈现引擎，平台和设备
var ua = navigator.userAgent;
if (window.opera) {
//第一步检测opera，因为它的用户代理字符串有可能完全模仿其他浏览器
//要识别Opera，必须的检测window.opera对象
engine.ver = browser.ver = window.opera.version();
engine.opera = browser.opera = parseFloat(engine.ver);
} else if (/AppleWebkit\/(\S+)/.test(ua)) {
//第二个要检测的是Webkit，因为Webkit的永华代理字符串中包含“Gecko”和“KHTML”
//Webkit的用户代理字符串中的“AppleWebkit”是独一无二的
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) || /Konqueror\/([^;]+)/.test(ua)) {
//接下来测试KHTML，KHTML的用户代理字符串也包含“Gecko”
//使用Konqueror检测Konqueror3.1及更早版本
engine.ver = browser.ver = RegExg["$1"];
engine.khtml = browser.kong = parseFloat(engine.ver);
} else if (/rv:([^\)]+)\) Gecko\/\d{8}/.test(ua)) {
//检测Gecko，Gecko版本号会出现在字符串"rv:"的后面
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 = parseFloat(browser.ver);
}
} else if (/MSIE ([^;]+)/.test(ua)) {
//检测IE，IE版本号位于字符串“MSIE”之后，一个分号的前面
engine.ver = browser.ver = RegExp["$1"];
engine.ie = browser.ie = parseFloat(engine.ver);
}
//检测浏览器
browser.ie = engine.ie;
browser.opera = engine.opera;
//识别平台
var p = navigator.platform;
system.win = p.indexOf("Win") == 0;
system.mac = p.indexOf("Mac") == 0;
system.x11 = (p.indexOf("x11") == 0) || (p.indexOf("Linux") == 0);
system.iphone = ua.indexOf("iphone") > -1;
system.ipod = ua.indexOf("iPod") > -1;
system.macMobile = (system.iphone || system.ipod);
system.nokiaN = ua.indexOf("NokiaN") > -1;
system.winMobile = (system.win == "CE");
system.wii = ua.indexOf("Wii") > -1;
system.ps = /playstation/i.test(ua);
//识别windows操作系统
if (system.win) {
if (/Win(?:dows )?([^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;
case "6.1":
system.win = "WIN7";
break;
default:
system.win = "NT";
break;
}
} else if (RegExp["$1"] == "9x") {
system.win = "ME";
} else {
system.win = RegExp["$1"];
}
}
}
return {
engine:engine,
browser:browser,
system:system
};
}();