javascript获取本机操作系统类型的方法

function GetOSInfo(){  var _pf=navigator.platform;  var appVer=navigator.userAgent;  if(_pf=="Win32" || _pf == "Windows")  {   if(appVer.indexOf("WOW64")>-1)  {    _bit = "64位";   }  else  {    _bit = "32位";   }   if(appVer.indexOf("Windows NT 6.0") > -1 || appVer.indexOf("Windows Vista") > -1)   {    if(_bit=='64位' || appVer.indexOf("Windows Vista") > -1)   {     return 'Windows_vista '+_bit;    }   else   {     return "Unknow1";    }   }  else if(appVer.indexOf("Windows NT 6.1") > -1 || appVer.indexOf("Windows 7") > -1)   {    if(_bit=='32位' || appVer.indexOf("Windows 7") > -1)   {     return 'Windows_7 '+_bit;    }   else   {     return "Unknow";    }   }  else  {    try   {     var _winName = Array('2000','XP','2003');     var _ntNum = appVer.match(/Windows NT 5./d/i).toString();     return 'Windows_' + _winName[_ntNum.replace(/Windows NT 5.(/d)/i,"$1")]+" "+_bit;    }   catch(e)   {    return 'Windows';   }   }  } else if(_pf == "Mac68K" || _pf == "MacPPC" || _pf == "Macintosh")  {   return "Mac";  } else if(_pf == "X11")  {   return "Unix";  } else if(String(_pf).indexOf("Linux") > -1)  {   return "Linux";  } else {   return "Unknow";  } }

var sUserAgent = navigator.userAgent;var fAppVersion = parseFloat(navigator.appVersion);//比较浏览器版本大小function compareVersions(sVersion1,sVersion2){  var aVersion1 = sVersion1.split(".");  var aVersion2 = sVersion2.split(".");  if(aVersion1.length>aVersion2.length){    for(var i=0;i<aVersion1.length;i++)      aVersion2.push("0");  }else if(aVersion1.length<aVersion2.length){    for(var i=0;i<aVersion2.length;i++)      aVersion1.push("0");  }  for(var i=0;i<aVersion1.length;i++){    if(aVersion1[i]<aVersion2[i])      return -1;    else if(aVersion1[i]>aVersion2[i])      return 1;  }  return 0;}//检测是否Opera浏览器var isOpera = sUserAgent.indexOf("Opera")>-1;var isMinOpera4 = isMinOpera5 = isMinOpera6 = isMinOpera7 = isMinOpera7_5 = false;if(isOpera){  var fOperaVersion;  if(navigator.appName == "Opera"){    fOperaVersion = fAppVersion;  } else {    var reOperaVersion = new RegExp("Opera (http://www.cnblogs.com/eoiioe/admin/file://d+///d+)");    reOperaVersion.test(sUserAgent);    fOperaVersion = parseFloat(RegExp["$1"]);  }  isMinOpera4 = fOperaVersion >= 4;  isMinOpera5 = fOperaVersion >= 5;  isMinOpera6 = fOperaVersion >= 6;  isMinOpera7 = fOperaVersion >= 7;  isMinOpera7_5 = fOperaVersion >= 7.5;}//检测是否Safarivar isKHTML = sUserAgent.indexOf("KHTML")>-1        || sUserAgent.indexOf("Konqueror")>-1        || sUserAgent.indexOf("AppleWebKit")>-1;var isMinSafari1 = isMinSafari1_2 = false;var isMinKonq2_2 = isMinKonq3 = isMinKonq3_1 = isMinKonq3_2 = false;if(isKHTML){  isSafari = sUserAgent.indexOf("AppleWebKit")>-1;  isKonq = sUserAgent.indexOf("Konqueror")>-1;  if(isSafari){    var reAppleWebKit = new RegExp("AppleWebKit///(http://www.cnblogs.com/eoiioe/admin/file://d+(/?://.//d*)?)");    reAppleWebKit.test(sUserAgent);    var fAppleWebKitVersion = parseFloat(RegExp["$1"]);    isMinSafari1 = fAppleWebKitVersion >= 85;    isMinSafari1_2 = fAppleWebKitVersion >= 124;  } else if (isKonq) {    var reKonq = new RegExp("Konqueror///(http://www.cnblogs.com/eoiioe/admin/file://d+(/?://.//d+(?://.//d)?)?)");    reKonq.test(sUserAgent);    isMinKonq2_2 = compareVersions(RegExp["$1"],"2.2") >= 0;    isMinKonq3 = compareVersions(RegExp["$1"],"3.0") >= 0;    isMinKonq3_1 = compareVersions(RegExp["$1"],"3.1") >= 0;    isMinKonq3_2 = compareVersions(RegExp["$1"],"3.2") >= 0;  }}//检测IEvar isIE = sUserAgent.indexOf("compatible") > -1      &&sUserAgent.indexOf("MSIE") > -1      &&!isOpera;var isMinIE4 = isMinIE5 = isMinIE5_5 = isMinIE6 = isMinIE7 = false;if(isIE){  var reIE = new RegExp("MSIE (http://www.cnblogs.com/eoiioe/admin/file://d+///d+);");  reIE.test(sUserAgent);  var fIEVersion = parseFloat(RegExp["$1"]);  isMinIE4 = fIEVersion >=4;  isMinIE5 = fIEVersion >=5;  isMinIE5_5 = fIEVersion >=5.5;  isMinIE6 = fIEVersion >=6;  isMinIE7 = fIEVersion >=7;}//检测Firfoxvar isFF = sUserAgent.indexOf("Firefox")>-1&&!isKHTML;var isMinFF1 = isMinFF2 =isMinFF3 = false;if(isFF){  var reFF = new RegExp("Firefox///(http://www.cnblogs.com/eoiioe/admin/file://d+///d+(?://.//d+//.//d+)?)");  reFF.test(sUserAgent);  isMinFF1 = compareVersions(RegExp["$1"],"1.0") >=0;  isMinFF2 = compareVersions(RegExp["$1"],"2.0") >=0;  isMinFF3 = compareVersions(RegExp["$1"],"3.0") >=0;}//检测Mozillavar isMoz = sUserAgent.indexOf("Gecko")>-1&&!isKHTML;var isMinMoz1 = isMinMoz1_4 = isMinMoz1_5 = isMinMoz1_8 = false;if(isMoz){  var reMoz = new RegExp("rv:(http://www.cnblogs.com/eoiioe/admin/file://d+///d+(?://.//d+)?)");  reMoz.test(sUserAgent);  isMinMoz1 = compareVersions(RegExp["$1"],"1.0") >=0;  isMinMoz1_4 = compareVersions(RegExp["$1"],"1.4") >=0;  isMinMoz1_5 = compareVersions(RegExp["$1"],"1.5") >=0;  isMinMoz1_8 = compareVersions(RegExp["$1"],"1.8") >=0;}var isNS4 = !isIE&&!isOpera&&!isMoz&&!isKHTML      &&(sUserAgent.indexOf("Mozilla")==0)      &&(navigator.appName == "Netscape")      &&(fAppVersion >= 4.0 && fAppVersion <5.0);var isMinNS4 = isMinNS4_5 = isMinNS4_7 =isMinNS4_8 = false;if(isNS4){  isMinNS4 = true;  ifMinNS4_5 = fAppVersion >= 4.5;  ifMinNS4_7 = fAppVersion >= 4.7;  ifMinNS4_8 = fAppVersion >= 4.8;}//检测操作系统var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC")      || (navigator.platform == "Macintosh");var isUnix = (navigator.platform == "X11" && !isWin && !isMac);var isWin95 = isWin98 = isWinNT4 = isWin2K = isWinME = isWinXP = isWin2K3 = isVista = false;var isMac68K = isMacPPC = false;var isSunOS = isMinSunOS4 = isMinSunOS5 = isMinSunOS5_5 = false;//Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506)if(isWin){  isWin95 = sUserAgent.indexOf("Win95") > -1 || sUserAgent.indexOf("Windows 95") >-1;  isWin98 = sUserAgent.indexOf("Win98") > -1 || sUserAgent.indexOf("Windows 98") >-1;  isWinME = sUserAgent.indexOf("Win 9x 4.90") > -1 || sUserAgent.indexOf("Windows ME") >-1;  isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") >-1;  isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 || sUserAgent.indexOf("Windows XP") >-1;  isWin2K3 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") >-1;  //检测Vista系统可能有bug  isVista = sUserAgent.indexOf("Windows NT 6.0") > -1 || sUserAgent.indexOf("Windows Vista") >-1;  if(!isWin2K3&&!isVista){    isWinNT4 = sUserAgent.indexOf("WinNT") > -1          || sUserAgent.indexOf("Windows NT") >-1          || sUserAgent.indexOf("WinNT4.0") >-1          || (sUserAgent.indexOf("Windows NT 4.0") >-1)          && (!isWinME&&!isWin2K&&!isWinXP);  }}if(isMac){  isMac68K = sUserAgent.indexOf("Mac_68000") > -1 || sUserAgent.indexOf("68K") > -1;  isMacPPC = suserAgent.indexOf("MacPowerPC") > -1 || sUserAgent.indexOf("PPC") > -1;}if(isUnix){  isSunOS = sUserAgent.indexOf("SunOS") > -1;  if(isSunOS){    var reSunOS = new RegExp("SunOS (http://www.cnblogs.com/eoiioe/admin/file://d+///d+(?://.//d+)?)");    reSunOS.test(sUserAgent);    isMinSunOS4 = compareVersions(RegExp["$1"],"4.0") >= 0;    isMinSunOS5 = compareVersions(RegExp["$1"],"5.0") >= 0;    isMinSunOS5_5 = compareVersions(RegExp["$1"],"5.5") >= 0;  }}document.write("<br/>");document.write("IE 浏览器：" + isIE);document.write("<br/>");document.write("Firfor 浏览器：" + isFF);document.write("<br/>");document.write("Windows 操作系统：" + isWin);document.write("<br/>");document.write("<br/>");document.write("Mozilla 1.5 ↑：" + isMinMoz1_5);document.write("<br/>");document.write("Mozilla 1.8 ↑：" + isMinMoz1_8);document.write("<br/>");document.write("Firfox 1.0 ↑：" + isMinFF1);document.write("<br/>");document.write("Firfox 2.0 ↑：" + isMinFF2);document.write("<br/>");document.write("Firfox 3.0 ↑：" + isMinFF3);document.write("<br/>");document.write("IE 4.0 ↑：" + isMinIE4);document.write("<br/>");document.write("IE 5.0 ↑：" + isMinIE5);document.write("<br/>");document.write("IE 5.5 ↑：" + isMinIE5_5);document.write("<br/>");document.write("IE 6.0 ↑：" + isMinIE6);document.write("<br/>");document.write("IE 7.0 ↑：" + isMinIE7);document.write("<br/>");document.write("Windows 95：" + isWin95);document.write("<br/>");document.write("Windows 98：" + isWin98);document.write("<br/>");document.write("Windows ME：" + isWinME);document.write("<br/>");document.write("Windows NT：" + isWinNT4);document.write("<br/>");document.write("Windows 2000：" + isWin2K);document.write("<br/>");document.write("Windows XP：" + isWinXP);document.write("<br/>");document.write("Windows 2003：" + isWin2K3);document.write("<br/>");document.write("Windows Vista：" + isVista);document.write("<br/>");