Jsonix (JSON interfaces for XML) is a JavaScript library which allows converting between XML and JSON structures.

npm install jsonix
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  • Jsonix (JSON interfaces for XML) is a JavaScript library which allows you to convert between XML and JSON structures.
  • With Jsonix you can parse XML into JSON (this process is called unmarshalling) or serialize JSON in XML form (this is called marshalling).
  • These conversions are based on declarative XML/JSON mappings which can be written manually or generated from an XML Schema.

Jsonix advantages:

  • Strongly structured.
  • Type-safe.
  • (Optionally) XML Schema-driven.


Here's a working example for the purchase order schema (try it online in JSFiddle).

Generate mappings

java -jar node_modules/jsonix/lib/jsonix-schema-compiler-full.jar
  -d mappings -p PO purchaseorder.xsd

Generates mappings for the purchaseorder.xsd schema in the mappings\PO.js; mappings will be placed in the variable PO.


// Include or require PO.js so that PO variable is available
// For instance, in node.js:
var PO = require('./mappings/PO').PO;

// First we construct a Jsonix context - a factory for unmarshaller (parser)
// and marshaller (serializer)
var context = new Jsonix.Context([PO]);

// Then we create a unmarshaller
var unmarshaller = context.createUnmarshaller();

// Unmarshal an object from the XML retrieved from the URL
    // This callback function will be provided
    // with the result of the unmarshalling
    function (unmarshalled) {
        // Alice Smith
        // Baby Monitor

You can also unmarshalString, unmarshalDocument and (under node.js) unmarshalFile.


// Create a marshaller
var marshaller = context.createMarshaller();

// Marshal a JavaScript Object as XML (DOM Document)
var doc = marshaller.marshalDocument({
    name: {
        localPart: "purchaseOrder"
    value: {
        orderDate: { year: 1999, month: 10, day: 20 },
        shipTo: {
            country: "US",
            name: "Alice Smith",
            street: "123 Maple Street",
            city: "Mill Valley",
            state: "CA",
            zip: 90952
        billTo: { /* ... */ },
        comment: 'Hurry, my lawn is going wild!',
        items: { /* ... */ }

You can also marshalString.


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