javascript操作系统检测

function detectOS() {
  var sUserAgent = navigator.userAgent;console.log(sUserAgent);
  var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
  var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh") || (navigator.platform == "MacIntel");
  if (isMac) return "Mac";
  var isUnix = (navigator.platform == "X11") && !isWin && !isMac;
  if (isUnix) return "Unix";
  var isLinux = (String(navigator.platform).indexOf("Linux") > -1);
  if (isLinux) return "Linux";
  if (isWin) {
    var isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") > -1;
    if (isWin2K) return "Win2000";
    var isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 || sUserAgent.indexOf("Windows XP") > -1;
    if (isWinXP) return "WinXP";
    var isWin2003 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") > -1;
    if (isWin2003) return "Win2003";
    var isWinVista= sUserAgent.indexOf("Windows NT 6.0") > -1 || sUserAgent.indexOf("Windows Vista") > -1;
    if (isWinVista) return "WinVista";
    var isWin7 = sUserAgent.indexOf("Windows NT 6.1") > -1 || sUserAgent.indexOf("Windows 7") > -1;
    if (isWin7) return "Win7";
    var isWin8 = sUserAgent.indexOf("Windows NT 6.2") > -1 ||sUserAgent.indexOf("Windows NT 6.3") > -1 || sUserAgent.indexOf("Windows 8") > -1;
    if (isWin8) return "Win8";
    var isWin10=sUserAgent.indexOf("Windows NT 10.0") > -1|| sUserAgent.indexOf("Windows 10.0") > -1;
    if(isWin10) return "win10"
  }
  return "other";
}

document.writeln("您的操作系统是：" + detectOS());