兼容IE/Firefox/Opera/Safari的检测页面装载完毕的脚本Ext.onReady的实现

<mce:script type="text/javascript"><!--function GOOGLEResize(){ alert(1);}var ua=navigator.userAgent.toLowerCase();var isStrict=document.compatMode=="CSS1Compat",isOpera=ua.indexOf("opera")>-1,isSafari=(/webkit|khtml/).test(ua),isIE=ua.indexOf("msie")>-1,isIE7=ua.indexOf("msie 7")>-1,isGecko=!isSafari&&ua.indexOf("gecko")>-1,isBorderBox=isIE&&!isStrict,isWindows=(ua.indexOf("windows")!=-1||ua.indexOf("win32")!=-1),isMac=(ua.indexOf("macintosh")!=-1||ua.indexOf("mac os x")!=-1),isLinux=(ua.indexOf("linux")!=-1),isSecure=window.location.href.toLowerCase().indexOf("https")===0;if(isGecko || isOpera) {document.addEventListener("DOMContentLoaded", GOOGLEResize, false);}else if(isIE){document.write("<s"+'cript id="ie-deferred-loader" defer="defer" src="/'+'/:"></s'+"cript>");var defer = document.getElementById("ie-deferred-loader");defer.onreadystatechange = function(){if(this.readyState == "complete"){GOOGLEResize();}};}else if(Ext.isSafari){docReadyProcId = setInterval(function(){var rs = document.readyState;if(rs == "complete") {GOOGLEResize(); }}, 10);}else{ window.onload=GOOGLEResize;}// --></mce:script>

其中对于IE的检测很有意思。

以上代码，整理自Extjs的脚本，完全可以代替 Ext.onReady使用。