sudo简介

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;iaVersion2[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Safari

var 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IE

var 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Firfox

var 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Mozilla

var 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 = 4.5;

    ifMinNS4_7 = fAppVersion >= 4.7;

    ifMinNS4_8 = fAppVersion >= 4.8;

};

//检测Chrome浏览器

var isChrome = sUserAgent.indexOf("AppleWebKit")>-1;

//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;

var isLinux = (navigator.platform == "Linux i686" && !isWin && !isMac);

//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("");

document.write("IE 浏览器：" + isIE);

document.write("");

document.write("Firfor 浏览器：" + isFF);

document.write("");

document.write("Windows 操作系统：" + isWin);

document.write("");

document.write("");

document.write("Mozilla 1.5 ↑：" + isMinMoz1_5);

document.write("");

document.write("Mozilla 1.8 ↑：" + isMinMoz1_8);

document.write("");

document.write("Firfox 1.0 ↑：" + isMinFF1);

document.write("");

document.write("Firfox 2.0 ↑：" + isMinFF2);

document.write("");

document.write("Firfox 3.0 ↑：" + isMinFF3);

document.write("");

document.write("Chrome：" + isChrome);

document.write("");

document.write("IE 4.0 ↑：" + isMinIE4);

document.write("");

document.write("IE 5.0 ↑：" + isMinIE5);

document.write("");

document.write("IE 5.5 ↑：" + isMinIE5_5);

document.write("");

document.write("IE 6.0 ↑：" + isMinIE6);

document.write("");

document.write("IE 7.0 ↑：" + isMinIE7);

document.write("");

document.write("Windows 95：" + isWin95);

document.write("");

document.write("Windows 98：" + isWin98);

document.write("");

document.write("Windows ME：" + isWinME);

document.write("");

document.write("Windows NT：" + isWinNT4);

document.write("");

document.write("Windows 2000：" + isWin2K);

document.write("");

document.write("Windows XP：" + isWinXP);

document.write("");

document.write("Windows 2003：" + isWin2K3);

document.write("");

document.write("Windows Vista：" + isVista);

document.write("");

document.write("Linux：" + isLinux);

document.write("");

document.write("Unix：" + isUnix);

document.write("");