js 检测浏览器，呈现引擎和平台

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[javascript] view plaincopyprint?var client = function(){ //呈现引擎 var engine = { ie : 0, gecko : 0, webkit : 0, khtml : 0, opera : 0, ver : null }; //浏览器 var browser = { //主要浏览器 ie : 0, firefox : 0, konq : 0, opera : 0, chrome : 0, safari : 0, //版本号 ver : null }; 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 }; //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); 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{ 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)){ engine.ver = browser.ver = RegExp["$1"]; engine.khtml = parseFloat(engine.ver); }else if(/rv:([^\)]+)\) Gecko\/\d{8}/.test(ua)){ engine.ver = browser.ver = RegExp["$1"]; engine.gecko = parseFloat(engine.ver); // if(/Firefox\/(\S+)/.test(ua)){ browser.ver = RegExp["$1"]; browser.firefox = parseFloat(browser.ver); } }else if(/MSIE ([^;]+)/.test(ua)){ engine.ver = browser.ver = RegExp["$1"]; engine.ie = browser.ie = parseFloat(browser.ver); } 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平台 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; default : system.win = "NT"; break; } }else if(RegExp["$1"] == "9x"){ system.win = "ME"; }else{ system.win = RegExp["$1"]; } } } 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); system.wii = ua.indexOf("Wii") > -1; system.ps = /playstation/i.test(ua); return { engine : engine, browser : browser, system : system }; }();

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