加载外部xml

function createXMLDOM(){var verson = ["MSXML2.DOMDocument.6.0","MSXML2.DOMDocument.3.0","MSXML2.DOMDocument"];for( var i = 0;i < verson.length; i++ ){try{var xmlDOM = new ActiveXObject( verson[i] );return xmlDOM;} catch(e){// 跳过}}throw new Error("您的系统或者浏览器不支持MSXML库！");}var xml = createXMLDOM();/* xml.loadXML("<gag><user>gao</user></gag>");var ga = xml.getElementsByTagName("user")[0]; //alert(ga.innerHTML)alert(ga.firstChild.nodeValue)*//* var ga = xml.getElementsByTagName("age")[0]; alert(ga.firstChild.nodeValue) */xml.load("demo.xml");   // 加载外部的文件 xmlvar bbb = xml.createElement("bbb");var root = xml.documentElement;root.appendChild(bbb);var bbbText = xml.createTextNode("gagaga");bbb.appendChild(bbbText);