浏览器检测

本文摘自:http://lucky.diy.myrice.com/javascriptexam/browsersniffer.htm
<META http-equiv=Content-Type content="text/html; charset=gb2312"> <SCRIPT language=JavaScript> // convert all characters to lowercase to simplify testing var agt=navigator.userAgent.toLowerCase(); var appVer = navigator.appVersion.toLowerCase(); // *** BROWSER VERSION *** var is_minor = parseFloat(appVer); var is_major = parseInt(is_minor); // Note: On IE, start of appVersion return 3 or 4 // which supposedly is the version of Netscape it is compatible with. // So we look for the real version further on in the string var iePos = appVer.indexOf('msie'); if (iePos !=-1) { is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos))) is_major = parseInt(is_minor); } // Netscape6 is mozilla/5 + Netscape6/6.0!!! // Mozilla/5.0 (Windows; U; Win98; en-US; m18) Gecko/20001108 Netscape6/6.0 var nav6Pos = agt.indexOf('netscape6'); if (nav6Pos !=-1) { is_minor = parseFloat(agt.substring(nav6Pos+10)) is_major = parseInt(is_minor) } // Netscape7 is mozilla/5 + Netscape/7x var nav7Pos = agt.indexOf('netscape/7'); if (nav7Pos !=-1) { is_minor = parseFloat(agt.substring(nav7Pos+9)) is_major = parseInt(is_minor) } var is_getElementById = (document.getElementById) ? "true" : "false"; // 001121-abk var is_getElementsByTagName = (document.getElementsByTagName) ? "true" : "false"; // 001127-abk var is_documentElement = (document.documentElement) ? "true" : "false"; // 001121-abk var is_moz = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1) && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1) && (agt.indexOf('gecko/')!=-1)); var is_gver = 0; var is_moz_ver = 1; if (is_moz) { var is_gver = agt.indexOf('gecko/'); var is_gver = parseInt(agt.substring(is_gver+6)); var is_moz_ver = agt.indexOf('rv:'); var is_moz_ver = agt.substring(is_moz_ver+3); var is_paren = is_moz_ver.indexOf(')'); var is_moz_ver = is_moz_ver.substring(0,is_paren); is_minor = parseFloat(is_moz_ver) is_major = parseInt(is_moz_ver) } var is_opera = (agt.indexOf("opera") != -1); var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1); var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1); var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1); var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1); var is_opera6 = (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1); // new 020128- abk var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4); var is_opera6up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5); // new020128 var is_nav = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1) && (!(is_moz))); var is_nav2 = (is_nav && (is_major == 2)); var is_nav3 = (is_nav && (is_major == 3)); var is_nav4 = (is_nav && (is_major == 4)); var is_nav4up = (is_nav && is_minor >= 4); // changed to is_minor for // consistency - dmr, 011001 var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) || (agt.indexOf("; nav") != -1)) ); var is_nav6 = (is_nav && is_major==6); // new 010118 mhp var is_nav6up = (is_nav && is_minor >= 6) // new 010118 mhp var is_nav5 = (is_nav && is_major == 5 && !is_nav6); // checked for ns6 var is_nav5up = (is_nav && is_minor >= 5); var is_nav7 = (is_nav && is_major == 7); var is_nav7up = (is_nav && is_minor >= 7); var is_ie = ((iePos!=-1) && (!is_opera)); var is_ie3 = (is_ie && (is_major < 4)); var is_ie4 = (is_ie && is_major == 4); var is_ie4up = (is_ie && is_minor >= 4); var is_ie5 = (is_ie && is_major == 5); var is_ie5up = (is_ie && is_minor >= 5); var is_ie5_5 = (is_ie && (agt.indexOf("msie 5.5") !=-1)); // 020128 new - abk var is_ie5_5up =(is_ie && is_minor >= 5.5); // 020128 new - abk var is_ie6 = (is_ie && is_major == 6); var is_ie6up = (is_ie && is_minor >= 6); // KNOWN BUG: On AOL4, returns false if IE3 is embedded browser // or if this is the first browser window opened. Thus the // variables is_aol, is_aol3, and is_aol4 aren't 100% reliable. var is_aol = (agt.indexOf("aol") != -1); var is_aol3 = (is_aol && is_ie3); var is_aol4 = (is_aol && is_ie4); var is_aol5 = (agt.indexOf("aol 5") != -1); var is_aol6 = (agt.indexOf("aol 6") != -1); var is_aol7 = ((agt.indexOf("aol 7")!=-1) || (agt.indexOf("aol7")!=-1)); var is_webtv = (agt.indexOf("webtv") != -1); // new 020128 - abk var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); var is_AOLTV = is_TVNavigator; var is_hotjava = (agt.indexOf("hotjava") != -1); var is_hotjava3 = (is_hotjava && (is_major == 3)); var is_hotjava3up = (is_hotjava && (is_major >= 3)); // end new // *** JAVASCRIPT VERSION CHECK *** // Useful to workaround Nav3 bug in which Nav3 // loads <SCRIPT LANGUAGE="JavaScript1.2">. // updated 020131 by dragle var is_js; if (is_nav2 || is_ie3) is_js = 1.0; else if (is_nav3) is_js = 1.1; else if (is_opera5up) is_js = 1.3; // 020214 - dmr else if (is_opera) is_js = 1.1; else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2; else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3; else if (is_nav5 && !(is_nav6)) is_js = 1.4; else if (is_hotjava3up) is_js = 1.4; // new 020128 - abk else if (is_nav6up) is_js = 1.5; // NOTE: In the future, update this code when newer versions of JS // are released. For now, we try to provide some upward compatibility // so that future versions of Nav and IE will show they are at // *least* JS 1.x capable. Always check for JS version compatibility // with > or >=. else if (is_nav && (is_major > 5)) is_js = 1.4; else if (is_ie && (is_major > 5)) is_js = 1.3; else if (is_moz) is_js = 1.5; // what about ie6 and ie6up for js version? abk // HACK: no idea for other browsers; always check for JS version // with > or >= else is_js = 0.0; // HACK FOR IE5 MAC = js vers = 1.4 (if put inside if/else jumps out at 1.3) if ((agt.indexOf("mac")!=-1) && is_ie5up) is_js = 1.4; // 020128 - abk // *** PLATFORM *** var is_win = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) ); // NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all // Win32, so you can't distinguish between Win95 and WinNT. var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1)); // is this a 16 bit compiled version? var is_win16 = ((agt.indexOf("win16")!=-1) || (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("windows 16-bit")!=-1) ); var is_win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) || (agt.indexOf("windows 16-bit")!=-1)); var is_winme = ((agt.indexOf("win 9x 4.90")!=-1)); // new 020128 - abk var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1) || (agt.indexOf("windows 2000")!=-1)); // 020214 - dmr var is_winxp = ((agt.indexOf("windows nt 5.1")!=-1) || (agt.indexOf("windows xp")!=-1)); // 020214 - dmr // NOTE: Reliable detection of Win98 may not be possible. It appears that: // - On Nav 4.x and before you'll get plain "Windows" in userAgent. // - On Mercury client, the 32-bit version will return "Win98", but // the 16-bit version running on Win98 will still return "Win95". var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1)); var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1)); var is_win32 = (is_win95 || is_winnt || is_win98 || ((is_major >= 4) && (navigator.platform == "Win32")) || (agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1)); var is_os2 = ((agt.indexOf("os/2")!=-1) || (navigator.appVersion.indexOf("OS/2")!=-1) || (agt.indexOf("ibm-webexplorer")!=-1)); var is_mac = (agt.indexOf("mac")!=-1); var is_mac68k = (is_mac && ((agt.indexOf("68k")!=-1) || (agt.indexOf("68000")!=-1))); var is_macppc = (is_mac && ((agt.indexOf("ppc")!=-1) || (agt.indexOf("powerpc")!=-1))); var is_sun = (agt.indexOf("sunos")!=-1); var is_sun4 = (agt.indexOf("sunos 4")!=-1); var is_sun5 = (agt.indexOf("sunos 5")!=-1); var is_suni86= (is_sun && (agt.indexOf("i86")!=-1)); var is_irix = (agt.indexOf("irix") !=-1); // SGI var is_irix5 = (agt.indexOf("irix 5") !=-1); var is_irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1)); var is_hpux = (agt.indexOf("hp-ux")!=-1); var is_hpux9 = (is_hpux && (agt.indexOf("09.")!=-1)); var is_hpux10= (is_hpux && (agt.indexOf("10.")!=-1)); var is_aix = (agt.indexOf("aix") !=-1); // IBM var is_aix1 = (agt.indexOf("aix 1") !=-1); var is_aix2 = (agt.indexOf("aix 2") !=-1); var is_aix3 = (agt.indexOf("aix 3") !=-1); var is_aix4 = (agt.indexOf("aix 4") !=-1); var is_linux = (agt.indexOf("inux")!=-1); var is_sco = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1); var is_unixware = (agt.indexOf("unix_system_v")!=-1); var is_mpras = (agt.indexOf("ncr")!=-1); var is_reliant = (agt.indexOf("reliantunix")!=-1); var is_dec = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) || (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) || (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1)); var is_sinix = (agt.indexOf("sinix")!=-1); var is_freebsd = (agt.indexOf("freebsd")!=-1); var is_bsd = (agt.indexOf("bsd")!=-1); var is_unix = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux || is_sco ||is_unixware || is_mpras || is_reliant || is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd); var is_vms = ((agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1)); // additional checks, abk var is_anchors = (document.anchors) ? "true":"false"; var is_regexp = (window.RegExp) ? "true":"false"; var is_option = (window.Option) ? "true":"false"; var is_all = (document.all) ? "true":"false"; // cookies - 990624 - abk document.cookie = "cookies=true"; var is_cookie = (document.cookie) ? "true" : "false"; var is_images = (document.images) ? "true":"false"; var is_layers = (document.layers) ? "true":"false"; // gecko m7 bug? // new doc obj tests 990624-abk var is_forms = (document.forms) ? "true" : "false"; var is_links = (document.links) ? "true" : "false"; var is_frames = (window.frames) ? "true" : "false"; var is_screen = (window.screen) ? "true" : "false"; // java var is_java = (navigator.javaEnabled()); </SCRIPT> </HEAD> <BODY text=#000000 bgColor=#ffffff> 你浏览器信息如下： <br> <P><B>Navigator Object Data</B> <br> <SCRIPT language=JavaScript> <!-- document.write("navigator.appCodeName: " + navigator.appCodeName + "<BR>"); document.write('navigator.appName: ' + navigator.appName + "<BR>"); document.write('navigator.appVersion: ' + navigator.appVersion + "<BR>"); document.write("navigator.userAgent: " + navigator.userAgent + "<BR>"); document.write("navigator.platform: " + navigator.platform + "<BR>"); document.write("navigator.javaEnabled(): " + is_java + "<BR>"); //--> </SCRIPT> <P><B>Version Number</B></p> <SCRIPT language=JavaScript> <!-- document.write("<TT>major version number: " + is_major + "</TT><BR>"); document.write("<TT>major/minor version number: " + is_minor + "</TT><BR>"); //--></SCRIPT> <P><B>Browser Version</B> <BR> <SCRIPT language=JavaScript> <!-- document.write("nav:" + is_nav + "<BR>"); document.write("nav2:" + is_nav2 + "<BR>"); document.write("nav3:" + is_nav3 + "<BR>"); document.write("nav4:" + is_nav4 + "<BR>"); document.write("nav4up:" + is_nav4up + "<BR>"); document.write("nav5:" + is_nav5 + "<BR>"); document.write("nav5up:" + is_nav5up + "<BR>"); document.write("nav6:" + is_nav6 + "<BR>"); document.write("nav6up:" + is_nav6up + "<BR>"); // 001121 new - abk document.write("nav7:" + is_nav7 + "<BR>"); document.write("nav7up:" + is_nav7up + "<P>"); // document.write("navonly:" + is_navonly + "<BR>"); // is false in ns6? document.write("ie:" + is_ie + "<BR>"); document.write("ie3:" + is_ie3 + "<BR>"); document.write("ie4:" + is_ie4 + "<BR>"); document.write("ie4up:" + is_ie4up + "<BR>"); document.write("ie5:" + is_ie5 + "<BR>"); document.write("ie5up:" + is_ie5up + "<BR>"); document.write("ie5_5:" + is_ie5_5 + "<BR>"); document.write("ie5_5up:" + is_ie5_5up + "<BR>"); document.write("ie6:" + is_ie6 + "<BR>"); document.write("ie6up:" + is_ie6up + "<P>"); document.write("aol:" + is_aol + "<BR>"); document.write("aol3:" + is_aol3 + "<BR>"); document.write("aol4:" + is_aol4 + "<BR>"); document.write("aol5:" + is_aol5 + "<BR>"); document.write("aol6:" + is_aol6 + "<BR>"); document.write("aol7:" + is_aol7 + "<BR>"); // 020214 - dmr document.write("<P>" + "opera:" + is_opera + "<BR>"); document.write("opera2:" + is_opera2 + "<BR>"); document.write("opera3:" + is_opera3 + "<BR>"); document.write("opera4:" + is_opera4 + "<BR>"); document.write("opera5:" + is_opera5 + "<BR>"); document.write("opera5up:" + is_opera5up + "<BR>"); document.write("opera6:" + is_opera6 + "<BR>"); document.write("opera6up:" + is_opera6up + "<BR>"); document.write("<P>" + "mozilla (guessing): " + is_moz + "<BR>"); if (is_moz) { document.write("mozilla version (guessing): " + is_moz_ver + "<BR>"); document.write("gecko build (guessing): " + is_gver + "<BR>"); } document.write("<P>" + "webtv:" + is_webtv + "<BR>"); document.write("<P>" + "hotjava:" + is_hotjava + "<BR>"); document.write("hotjava3:" + is_hotjava3 + "<BR>"); document.write("hotjava3up:" + is_hotjava3up + "<BR>"); document.write("<P>" + "AOL TV(TVNavigator):" + is_TVNavigator + "<BR>"); //--> </SCRIPT> </TT> <P><B>JavaScript Version</B> <BR><TT> <SCRIPT language=JavaScript> <!-- if (is_opera) { document.write("js:" + is_js + " <a href='http://www.opera.com/docs/specs/#ecmascript'>(but see Opera's compatibility statements)</a>"); } else { document.write("js:" + is_js + "<BR>"); } //--> </SCRIPT> <SCRIPT language=JScript> <!-- // 020131 included is_ie check to filter opera which doesn't recognize // ScriptEngine() and spawns an error - dragle if((document.all) && (is_ie)) { document.write("<P>IE 4/5/6 Script Engines Installed: " + ScriptEngine() + "<BR>"); document.write("Version: " + ScriptEngineMajorVersion() + "." + ScriptEngineMinorVersion() + "." + ScriptEngineBuildVersion() + "<BR>"); } //--> </SCRIPT> </TT> <P><B>OS</B> <BR><TT> <SCRIPT language=JavaScript> <!-- document.write("win:" + is_win + "<BR>"); // document.write("win16:" + is_win16 + "<BR>"); // document.write("win31:" + is_win31 + "<BR>"); // document.write("win32:" + is_win32 + "<BR>"); // document.write("win95:" + is_win95 + "<BR>"); // document.write("win98:" + is_win98 + "<BR>"); // document.write("winme:" + is_winme + "<BR>"); // document.write("winnt:" + is_winnt + "<BR>"); // document.write("win2k:" + is_win2k + "<BR>"); // document.write("winxp:" + is_winxp + "<BR>"); document.write("os2:" + is_os2 + "<BR>"); document.write("mac:" + is_mac + "<BR>"); // document.write("mac68k:" + is_mac68k + "<BR>"); // document.write("macppc:" + is_macppc + "<BR>"); document.write("unix:" + is_unix + "<BR>"); document.write("sun:" + is_sun + "<BR>"); // document.write("sun4:" + is_sun4 + "<BR>"); // document.write("sun5:" + is_sun5 + "<BR>"); // document.write("suni86:" + is_suni86 + "<BR>"); document.write("irix:" + is_irix + "<BR>"); // document.write("irix5:" + is_irix5 + "<BR>"); // document.write("irix6:" + is_irix6 + "<BR>"); document.write("hpux:" + is_hpux + "<BR>"); // document.write("hpux9:" + is_hpux9 + "<BR>"); // document.write("hpux10:" + is_hpux10 + "<BR>"); document.write("aix:" + is_aix + "<BR>"); // document.write("aix1:" + is_aix1 + "<BR>"); // document.write("aix2:" + is_aix2 + "<BR>"); // document.write("aix3:" + is_aix3 + "<BR>"); // document.write("aix4:" + is_aix4 + "<BR>"); document.write("linux:" + is_linux + "<BR>"); document.write("sco:" + is_sco + "<BR>"); document.write("unixware:" + is_unixware + "<BR>"); document.write("mpras:" + is_mpras + "<BR>"); document.write("reliant:" + is_reliant + "<BR>"); document.write("dec:" + is_dec + "<BR>"); document.write("sinix:" + is_sinix + "<BR>"); document.write("bsd:" + is_bsd + "<BR>"); document.write("freebsd:" + is_freebsd + "<BR>"); document.write("vms:" + is_vms + "<BR>"); //--> </SCRIPT> </TT> <P><B>Object Detection Tests</B> <BR><TT> <SCRIPT language=JavaScript> <!-- document.write('document.all: ' + is_all + "<BR>"); document.write('document.anchors: ' + is_anchors + "<BR>"); document.write('document.cookie: ' + is_cookie + "<BR>"); document.write('document.forms: ' + is_forms + "<BR>"); document.write('document.getElementById: ' + is_getElementById+ "<BR>"); // new 001121 abk for ns6+ document.write('document.getElementsByTagName: ' + is_getElementsByTagName + "<BR>"); document.write('document.documentElement: ' + is_documentElement + "<BR>"); document.write('document.images: ' + is_images + "<BR>"); document.write('document.layers: ' + is_layers + " - NS6 gives false here**" + "<BR>"); // ' + is_layers + "<BR>"); document.write('document.links: ' + is_links + "<BR><BR>"); document.write('window.frames: ' + is_frames + "<BR>"); document.write('window.length: ' + window.length +"<BR>"); //--> </SCRIPT> </TT> <P><B>Method Detection Tests</B> <BR><TT> <SCRIPT language=JavaScript> <!-- document.write('window.RegExp: ' + is_regexp + "<BR>"); document.write('window.Option: ' + is_option + "<BR>"); //--> </SCRIPT> </TT> <P><B>Screen Properties</B> <BR><TT> <SCRIPT language=JavaScript> <!-- document.write('window.screen: ' + is_screen + "<BR>"); if (window.screen) { document.write('screen.height: ' + screen.height + "<BR>"); document.write('screen.width: ' + screen.width + "<BR>"); document.write('screen.availHeight: ' + screen.availHeight + "<BR>"); document.write('screen.availWidth: ' + screen.availWidth + "<BR>"); document.write('screen.colorDepth: ' + screen.colorDepth + "<BR>"); } //--> </SCRIPT> <SCRIPT language=JScript> <!-- if (window.screen) { document.write("fontSmoothingEnabled: " + screen.fontSmoothingEnabled + "<BR>"); } //--> </SCRIPT> </TT> <P><B>Document Properties</B> <BR><TT> <SCRIPT language=JavaScript> <!-- document.write('document.lastModified: ' + document.lastModified + "<BR>"); // gecko bug? document.write('document.referrer: ' + document.referrer + "<BR>"); document.write('document.URL: ' + document.URL + "<BR>"); //--> </SCRIPT> <hr> </BODY></HTML>

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