JS获取操作系统信息

[JS获取操作系统信息 ]

function getOsVersion(){

        var opName = "";

        var Name = "";

        var ua = window.navigator.userAgent;

        var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");

        var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC")

                || (navigator.platform == "Macintosh") || (navigator.platform == "MacIntel");

          

        if (isMac){

            opName = "Mac";

                    Name   = "Mac";

        }else if(isWin){

                    var osN = ua.substr(ua.indexOf("Windows NT ")+19, 2); 

                var osV = ua.substr(ua.indexOf("Windows NT ")+11, 3); 

                switch (osV) {

                    case "5.0":

                        opName = "Windows XP2000";

                        Name   = "Win2000";

                        break;

                    case "5.1":

                        opName = "Windows XP ";

                        Name   = "WinXP";

                        break;

                    case "5.2":

                        opName = "Windows 2003"; 

                        Name   = "Win2003";

                        break;

                    case "6.1":

                        opName = "Windows 7 "+osN+"位";

                        Name   = "Win7";

                        break;

                    default:

                       Name = "Other";

                        break;

                }

        }else{

            var isUnix = (navigator.platform == "X11") && !isWin && !isMac;

            if (isUnix){

                        opName = "Unix";

                            Name = "Unix";

            }else{

                var isLinux = (String(navigator.platform).indexOf("Linux") > -1);

                if (isLinux){

                                opName = "Linux";

                            Name   = "Linux";

                }else{

                    Name = "Other";

                }

            }           

        }

          

        if(Name=="Win7" || Name=="WinXP" || Name=="Mac"){

             alert("您的系统可以满足您的上课条件,不需要做更改！");          

        }else{

            alert("您的操作系统在访问对个人中心时可能会出现不兼容的情况，建议您重新装Windows XP及以上的系统！");

        }       

    }