Generating a primary XML element encompassing multiple namespaces

I am currently working on integrating Restful services with Backbone.js framework. In this project, I need to send XML data and add multiple namespaces to it.

Here is the snippet of my current JavaScript code:

var mainNamespace = "xmlns='http://services.xyz/xmlschema/common'";
var secondaryNamespace = "xmlns:ns2='http://services.xyz/xmlschema/subscription'";

var xmlDoc = document.implementation.createDocument(mainNamespace, "ns2:subscription", "");

However, I would like the XML root node to look something like this:

<ns2:subscription xmlns='http://services.xyz/xmlschema/common' 
xmlns:ns2='http://services.xyz/xmlschema/subscription'>..</ns2:subscription>

Thank you in advance for any assistance provided!

javascriptjqueryxmlbackbone.jsnamespaces

Answer №1

An HTML element can only have a singular namespace, but it can have multiple definitions of namespaces. These additional namespaces can be added as attribute nodes in the XMLNS namespace. However, this is only necessary if the namespace is not utilized by the HTML element or any of its attribute nodes.

var xmlns = {
    company : "http://services.xyz/xmlschema/company",
    xmlns: "http://www.w3.org/2000/xmlns/",
    ns2 : "http://services.xyz/xmlschema/subscriptions",
    ns3 : "urn:unique_namespace"
};

var dom = document.implementation.createDocument('', '', null);
// Create a node within the specified namespace (which also adds the definition of the namespace)
var node = dom.appendChild(dom.createElementNS(xmlns.ns2, 'ns2:subscription'));
// Set default namespace - simple XMLNS attribute
node.setAttribute('xmlns', xmlns.company);
// Set another namespace - attribute in the XMLNS namespace
node.setAttributeNS(xmlns.xmlns, 'xmlns:ns3', xmlns.ns3);

document.getElementById('custom-textarea').textContent = (new XMLSerializer()).serializeToString(dom);
<textarea id="custom-textarea" style="width: 100%; height: 5em;"></textarea>

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