javascript 判断浏览器版本以及操作系统--最详细代码
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javascript 判断浏览器版本以及操作系统--最详细代码
2009-05-05 10:09:11| 分类： javascript|字号 订阅
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); } 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_gecko = ((navigator.product)&&(navigator.product.toLowerCase()=="gecko"))?true:false; var is_gver = 0; if (is_gecko) is_gver=navigator.productSub; 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) && (is_gecko) && ((navigator.vendor=="")||(navigator.vendor=="Mozilla"))||(agt.indexOf('firefox')!=-1)); if (is_moz) { var is_moz_ver = (navigator.vendorSub)?navigator.vendorSub:0; if(!(is_moz_ver)) { is_moz_ver = agt.indexOf('rv:'); is_moz_ver = agt.substring(is_moz_ver+3); is_paren = is_moz_ver.indexOf(')'); is_moz_ver = is_moz_ver.substring(0,is_paren); } is_minor = is_moz_ver; is_major = parseInt(is_moz_ver); } 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))); // Netscape6 is mozilla/5 + Netscape6/6.0!!! // Mozilla/5.0 (Windows; U; Win98; en-US; m18) Gecko/20001108 Netscape6/6.0 // Changed this to use navigator.vendor/vendorSub - dmr 060502 // var nav6Pos = agt.indexOf('netscape6'); // if (nav6Pos !=-1) { if ((navigator.vendor)&& ((navigator.vendor=="Netscape6")||(navigator.vendor=="Netscape"))&& (is_nav)) { is_major = parseInt(navigator.vendorSub);// here we need is_minor as a valid float for testing. We'll // revert to the actual content before printing the result. is_minor = parseFloat(navigator.vendorSub); } 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_opera7 = (agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1); // new 021205- dmr 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_opera7up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6); // new021205 -- dmr 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); var is_ie7 = (is_ie && is_major == 7); var is_ie7up = (is_ie && is_minor >= 7);// 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_aol8 = ((agt.indexOf("aol 8")!=-1) || (agt.indexOf("aol8")!=-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 // Done with is_minor testing; revert to real for N6/7 if (is_nav6up) { is_minor = navigator.vendorSub; } // *** 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); if (is_mac) { is_win = !is_mac; } // dmr - 06/20/2002 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_safari = ((agt.indexOf('safari')!=-1)&&(agt.indexOf('mac')!=-1))?true:false; 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());// Flash checking code based adapted from Doc JavaScript information; // see http://webref.com/js/column84/2.html var is_Flash = false; var is_FlashVersion = 0; if ((is_nav||is_opera||is_moz)|| (is_mac&&is_ie5up)) { var plugin = (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] && navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin) ? navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : 0; if (plugin) { is_Flash = true; is_FlashVersion = parseInt(plugin.description.substring(plugin.description.indexOf(".")-1)); } } if (is_win&&is_ie4up) { document.write( '<scr' + 'ipt language=VBScript>' + '\n' + 'Dim hasPlayer, playerversion' + '\n' + 'hasPlayer = false' + '\n' + 'playerversion = 10' + '\n' + 'Do While playerversion > 0' + '\n' + 'On Error Resume Next' + '\n' + 'hasPlayer = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash." & playerversion)))' + '\n' + 'If hasPlayer = true Then Exit Do' + '\n' + 'playerversion = playerversion - 1' + '\n' + 'Loop' + '\n' + 'is_FlashVersion = playerversion' + '\n' + 'is_Flash = hasPlayer' + '\n' + '<\/sc' + 'ript>' ); }
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