How To Convert Xml Data To Json In Jquery

There are many situations where you may want to convert XML data to JSON format in web development. For instance, XML data returned by an API might need to be parsed and manipulated in JavaScript. JSON is a lighter and more efficient format for data interchange, and it is much easier to parse and use in JavaScript than XML. In this blog post, we will learn how to convert XML data to JSON format using jQuery.

What is XML?

XML (Extensible Markup Language) is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. It is widely used for the representation of arbitrary data structures such as those used in web services. XML is similar to HTML, but it’s more flexible and designed to store and transport data rather than display it.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate. JSON is a text format that is completely language-independent but uses conventions that are familiar to programmers of the C family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. JSON is often used to transmit data between a server and a web application, as an alternative to XML.

Converting XML to JSON with jQuery

To convert XML data to JSON format using jQuery, you can use a custom function that leverages jQuery’s built-in XML parsing capabilities. Here’s the general outline of the function:

function xmlToJson(xml) {
    // Create the JSON object.
    var obj = {};

    // Parse the XML.
    // ...

    return obj;

Let’s break this down. First, we create an empty JavaScript object that will eventually hold our converted JSON data. Next, we’ll parse the XML data using jQuery’s $.each() function, which allows us to loop through XML elements and their attributes, building our JSON object as we go.

Here’s the complete code for the xmlToJson() function:

function xmlToJson(xml) {
    var obj = {};

    if (xml.nodeType === 1) { // element
        if (xml.attributes.length > 0) {
            obj["@attributes"] = {};
            for (var j = 0; j < xml.attributes.length; j++) {
                var attribute = xml.attributes.item(j);
                obj["@attributes"][attribute.nodeName] = attribute.nodeValue;
    } else if (xml.nodeType === 3) { // text
        obj = xml.nodeValue;

    if (xml.hasChildNodes()) {
        for (var i = 0; i < xml.childNodes.length; i++) {
            var item = xml.childNodes.item(i);
            var nodeName = item.nodeName;
            if (typeof (obj[nodeName]) === "undefined") {
                obj[nodeName] = xmlToJson(item);
            } else {
                if (typeof (obj[nodeName].push) === "undefined") {
                    var old = obj[nodeName];
                    obj[nodeName] = [];

    return obj;

To use this function, simply pass your XML data as a parameter:

var xmlData = "<data><item id="1">Item 1</item><item id="2">Item 2</item></data>";
var jsonData = xmlToJson($.parseXML(xmlData));

The xmlToJson() function will return a JSON object that represents the same data structure as the input XML data. You can now easily manipulate the JSON data using JavaScript.


In this blog post, we learned how to convert XML data to JSON format using a custom jQuery function. This can be a useful technique for parsing and manipulating XML data returned by web services and APIs. JSON is a more lightweight and efficient data interchange format, and it’s much easier to work with in JavaScript than XML.