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XML DOM getElementsByTagNameNS() Method

❮ Document Object


The following code fragment loads "books.xml" into xmlDoc and adds an element node with a namespace to each <book> element:

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
   if (this.readyState == 4 && this.status == 200) {
xhttp.open("GET", "books.xml", true);

function myFunction(xml) {
    var x, y, z, i, newel, newtext, xmlDoc, txt;
    xmlDoc = xml.responseXML;
    txt = "";
    x = xmlDoc.getElementsByTagName("book");
    for (i = 0; i < x.length; i++) {
        newel = xmlDoc.createElementNS("p", "edition");
        newtext = xmlDoc.createTextNode("First");
    // Output all titles and editions
    y = xmlDoc.getElementsByTagName("title");
    z = xmlDoc.getElementsByTagNameNS("p","edition");
    for (i = 0; i < y.length; i++) {
        txt += y[i].childNodes[0].nodeValue +
        " - " +
        z[i].childNodes[0].nodeValue +
        " edition." +
        " Namespace: " +
        z[i].namespaceURI + "<br>";
    document.getElementById("demo").innerHTML = txt;

The output of the code above will be:

Everyday Italian - First edition. Namespace: p
Harry Potter - First edition. Namespace: p
XQuery Kick Start - First edition. Namespace: p
Learning XML - First edition. Namespace: p
Try it Yourself »

Definition and Usage

The getElementsByTagNameNS() method returns a NodeList of all elements with the specified name and namespace.



Parameter Description
nsA string that specifies the namespace name to search for. The value "*" matches all tags
nameA string that specifies the tagname to search for. The value "*" matches all tags

❮ Document Object