这篇文章主要介绍了ExtJS判断IE浏览器类型的方法,需要的朋友可以参考下

代码在ext里的srccoreext.js下    最新的ext3.0beat1的代码如下：   代码如下: ua = navigator.userAgent.toLowerCase(),  check = function(r){  return r.test(ua);  },  isStrict = document.compatMode == "CSS1Compat",  isOpera = check(/opera/),  isChrome = check(/chrome/),  isWebKit = check(/webkit/),  isSafari = !isChrome && check(/safari/),  isSafari3 = isSafari && check(/version/3/),  isSafari4 = isSafari && check(/version/4/),  isIE = !isOpera && check(/msie/),  isIE7 = isIE && check(/msie 7/),  isIE8 = isIE && check(/msie 8/),  isGecko = !isWebKit && check(/gecko/),  isGecko3 = isGecko && check(/rv:1.9/),  isBorderBox = isIE && !isStrict,  isWindows = check(/windows|win32/),  isMac = check(/macintosh|mac os x/),  isAir = check(/adobeair/),  isLinux = check(/linux/),  isSecure = /^https/i.test(window.location.protocol);    而2.2.1下（在sourcecoreext.js里）的为   代码如下: var ua = navigator.userAgent.toLowerCase();  var isStrict = document.compatMode == "CSS1Compat",  isOpera = ua.indexOf("opera") > -1,  isChrome = ua.indexOf("chrome") > -1,  isSafari = !isChrome && (/webkit|khtml/).test(ua),  isSafari3 = isSafari && ua.indexOf('webkit/5') != -1,  isIE = !isOpera && ua.indexOf("msie") > -1,  isIE7 = !isOpera && ua.indexOf("msie 7") > -1,  isIE8 = !isOpera && ua.indexOf("msie 8") > -1,  isGecko = !isSafari && !isChrome && ua.indexOf("gecko") > -1,  isGecko3 = isGecko && ua.indexOf("rv:1.9") > -1,  isBorderBox = isIE && !isStrict,  isWindows = (ua.indexOf("windows") != -1 || ua.indexOf("win32") != -1),  isMac = (ua.indexOf("macintosh") != -1 || ua.indexOf("mac os x") != -1),  isAir = (ua.indexOf("adobeair") != -1),  isLinux = (ua.indexOf("linux") != -1),  isSecure = window.location.href.toLowerCase().indexOf("https") === 0;