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<!DOCTYPE html> <html> <body> <p id="demo"></p> <script> var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { myFunction(this); } }; xhttp.open("GET", "books.xml", true); xhttp.send(); function myFunction(xml) { var x, y, i, newElement, txt, xmlDoc; xmlDoc = xml.responseXML; newElement = xmlDoc.createElement("edition"); x = xmlDoc.getElementsByTagName("book")[0] x.appendChild(newElement); // Display all elements xlen = x.childNodes.length; y = x.firstChild; txt = ""; for (i = 0; i < xlen; i++) { if (y.nodeType == 1) { txt += y.nodeName + "<br>"; } y = y.nextSibling; } document.getElementById("demo").innerHTML = txt; } </script> </body> </html>