<!DOCTYPE html>
<html>
<body>
<p id="demo"></p>
<script>
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {
myFunction(xhttp);
}
};
xhttp.open("GET", "books.xml", true);
xhttp.send();
function myFunction(xml) {
var x, txt, xmlDoc;
xmlDoc = xml.responseXML;
x = xmlDoc.getElementsByTagName("book")[0].attributes;
txt = x.getNamedItem("category").nodeValue + "<br>" + x.length;
document.getElementById("demo").innerHTML = txt;
}
</script>
</body>
</html>