基於javascript代碼檢測訪問網頁的瀏覽器呈現引擎、平台、Windows作業系統、行動裝置和遊戲系統_javascript技巧

廢話不多說了，直接給大家貼js代碼了，代碼附有注釋，感興趣的朋友一起學習吧。

/** * Author: laixiangran. * Created by laixiangran on 2015/12/02. * 檢測訪問網頁的瀏覽器呈現引擎、平台、Windows作業系統、行動裝置和遊戲系統 * ******************************************************************** * 各版本瀏覽器在windows10.0下的使用者代理程式字串： * Google Chrome 45.0.2454.85 —— "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.85 Safari/537.36" * Opera 31.0.1889.174 —— "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.155 Safari/537.36 OPR/31.0.1889.174" * Microsoft Edge —— "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.10240" * Firefox 40.0.3 —— "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0" * Internet Explorer 11+ —— "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729; rv:11.0) like Gecko" * Internet Explorer 10- —— "Mozilla/5.0 (compatible; MSIE x.0; Windows NT 10.0; WOW64; Trident/8.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729)" */(function(){ window.iClient = {}; //呈現引擎資訊 var engine = { //呈現引擎 ie: 0, gecko: 0, webkit: 0, khtml: 0, opera:0, //具體版本號碼 ver: null }; var browser = { //瀏覽器 ie: 0, edge: 0, firefox: 0, safari: 0, konq: 0, opera: 0, chrome: 0, //具體版本號碼 ver: null }; //平台、裝置和作業系統 var system = { win: false, mac: false, unix: false, //行動裝置 iphone: false, ipod: false, ipad: false, ios: false, android: false, nokiaN: false, winMobile: false, //遊戲系統 wii: false, //任天堂 ps: false //Playstation3 }; //擷取瀏覽器的使用者代理程式字串 var ua = window.navigator.userAgent; //檢測呈現引擎和瀏覽器 //檢測Presto核心的Opera瀏覽器 if(window.opera){ engine.ver = browser.ver = window.opera.version(); engine.opera = browser.opera = parseFloat(engine.ver); } //檢測WebKit 用代理字串中的"AppleWebKit"進行檢測 else if(/AppleWebKit\/(\S+)/.test(ua)){ engine.ver = RegExp["$1"]; engine.webkit = parseFloat(engine.ver); //確定Microsoft Edge if(/Edge\/(\S+)/.test(ua)){  browser.ver = RegExp["$1"];  browser.edge = parseFloat(browser.ver); } //確定WebKit核心Opera else if(/OPR\/(\S+)/.test(ua)){  browser.ver = RegExp["$1"];  browser.opera = parseFloat(browser.ver); } //確定Chrome else if(/Chrome\/(\S+)/.test(ua)){  browser.ver = RegExp["$1"];  browser.chrome = parseFloat(browser.ver); } //確定Safari else if(/Version\/(\S+)/.test(ua)){  browser.ver = RegExp["$1"];  browser.safari = parseFloat(browser.ver); }else{  //近似的確定版本號碼  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.ver = browser.safari = safariVersion; } } //檢測KHTML 用於Konqueror3.1及更早版本中不包含KHTML的版本，故而就要使用Konqueror的版本來代替 else if(/KHTML\/(\S+)/.test(ua) || /Konqueror\/(\S+)/.test(ua)){ engine.ver = browser.ver = RegExp["$1"]; engine.khtml = browser.konq = parseFloat(engine.ver);s } //檢測Gecko 其版本號碼在字串"rv:"的後面 else if(/rv:([^\)]+)\) Gecko\/\d{8}/.test(ua)){ engine.ver = RegExp["$1"]; engine.gecko = parseFloat(engine.ver); //確定Firefox if(/Firefox\/(\S+)/.test(ua)){  browser.ver = RegExp["$1"];  browser.firefox = parseFloat(browser.ver); } } //檢測IE else if(/MSIE ([^;]+)/.test(ua) || /rv:([^\)]+)\) like Gecko/.test(ua)){ engine.ver = browser.ver = RegExp["$1"]; engine.ie = browser.ie = parseFloat(engine.ver); } //擷取平台或者作業系統資訊,可能的值：win32、win64、MacPPC、MacIntel、Xll、Linux i686 var p = window.navigator.platform; //檢測平台 system.win = p.indexOf("Win") == 0; system.mac = p.indexOf("Mac") == 0; system.unix = (p == "Xll'") || (p.indexOf("Linux") == 0); //檢測Windows作業系統 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 "7":   system.win = "7";   break;   case "8":   system.win = "8";   break;   case "8.1":   system.win = "8.1";   break;   case "10.0":   system.win = "10.0";   break;   default:   system.win = "NT";   break;  }  } } } //行動裝置 system.iphone = ua.indexOf("iPhone") > -1; system.ipod = ua.indexOf("iPod") > -1; system.ipad = ua.indexOf("iPad") > -1; system.nokiaN = ua.indexOf("NokiaN") > -1; //window mobile if(system.win == "CE"){ system.winMobile = system.win; }else if(system.win == "Ph"){ if(/Windows Phone OS (\d+.\d+)/.test(ua)){  system.win = "Phone";  system.winMobile = parseFloat(RegExp["$1"]); } } //檢測iOS版本 if(system.mac && ua.indexOf("Mobile") > -1){ if(/CPU (?:iPhone )?OS (\d+.\d+)/.test(ua)){  system.ios = parseFloat(RegExp["$1"].replace("_",".")); }else{  system.ios = 2; //不能真正檢測出來，所以只能猜測 } } //檢測安卓版本 if(/Android (\d+.\d+)/.test(ua)){ system.android = parseFloat(RegExp["$1"]); } //檢測遊戲系統 system.wii = ua.indexOf("wii") > -1; system.ps = /playstation/i.test(ua); window.iClient.engine = engine; window.iClient.browser = browser; window.iClient.system = system;})(); 

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