js判断浏览器的比较全的代码
现在的浏览器可真是越来越多，但兼容性可真是不敢恭维，这个脚本可根据浏览器 来自动进行导航，在特定场合是非常有用的，你好好看看吧！！！
复制代码 代码如下:
<SCRIPT language="JavaScript"> <!-- function browserSniffer(netscape4URL,explorer4URL,webtvURL, aolURL,operaURL,version3URL,w3cURL) { var agt=navigator.userAgent.toLowerCase(); var agt=navigator.userAgent.toLowerCase(); var is_major = parseInt(navigator.appVersion); var is_minor = parseFloat(navigator.appVersion); var is_nav = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1) && (agt.indexOf('webtv')==-1)); 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_major >= 4)); var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) || (agt.indexOf("; nav") != -1)) ); var is_nav5 = (is_nav && (is_major == 5)); var is_nav5up = (is_nav && (is_major >= 5)); var is_ie = (agt.indexOf("msie") != -1); var is_ie3 = (is_ie && (is_major < 4)); var is_ie4 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")==-1) ); var is_ie4up = (is_ie && (is_major >= 4)); var is_ie5 = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) ); var is_ie5up = (is_ie && !is_ie3 && !is_ie4); var is_aol = (agt.indexOf("aol") != -1); var is_aol3 = (is_aol && is_ie3); var is_aol4 = (is_aol && is_ie4); var is_opera = (agt.indexOf("opera") != -1); var is_webtv = (agt.indexOf("webtv") != -1); if (is_nav4up) { location.href = netscape4URL; // netscape 4+ but not NS5 }else if (is_ie4up) { //IE4 & IE5 but returns IE4 location.href = explorer4URL; }else if (is_webtv) { // Web TV location.href = webtvURL; }else if (is_aol || is_aol3 || is_aol4) { //AOL location.href = aolURL; }else if (is_opera) { // Opera location.href = operaURL; }else if (is_ie3||is_nav3) { // 3.0 version browsers location.href = version3URL; }else if (is_nav5up) { // Netscape 5 location.href = w3cURL; } } //--> </SCRIPT> <BODY >