动态创建XML文档

var createXML = function (str) {
if (typeof DOMParser !== "undefined") {
return (new DOMParser()).parsefromString(str, "application/xml");
}else if (typeof ActiveXObject != "undefined") {
if (typeof arguments.callee.activeXString !== "string"){//在createXML上设置一个静态成员
var versions = ["MSXML2.DOMDocument.6.0",
"MSXML2.DOMDocument.5.0",
"MSXML2.DOMDocument.4.0",
"MSXML2.DOMDocument.3.0",
"MSXML2.DOMDocument",
"Microsoft.XMLDOM"];
for (var i=0,len=versions.length; i < len; i++){
try {
var xml = new ActiveXObject(versions[i]);
arguments.callee.activeXString = versions[i];
xml = null;
} catch (e){}
}
}
xml = new ActiveXObject(arguments.callee.activeXString);
xml.async="false";
xml.loadXML(str);
return xml
}
}
var xml = createXML('<xml id="xx"><book><title>司徒正美</title></book></xml>');