代码示例：（标识：xdom_createelement_1）
<html>
<head>
<script type="text/javascript" src="/static/demo/html/js/loadxmldoc.js">
</script>
</head>
<body>
<script type="text/javascript">
xmlDoc=loadXMLDoc("/static/demo/xdom/books.xml");
newel=xmlDoc.createElement("edition");
newtext=xmlDoc.createTextNode("first");
newel.appendChild(newtext);
x=xmlDoc.getElementsByTagName("book")[0];
x.appendChild(newel);
//Output title and edition
document.write(x.getElementsByTagName("title")[0].childNodes[0].nodeValue);
document.write(" - Edition: ");
document.write(x.getElementsByTagName("edition")[0].childNodes[0].nodeValue);
</script>
</body>
</html>
