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

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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
  • Bidirectional
  • (Optionally) XML Schema-driven
See also the other Jsonix features.


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

Generate mappings

``` java -jar nodemodules/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.

Parse XML into JS

```javascript // 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 unmarshaller.unmarshalURL('po.xml',
// 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.

Serialize JS as XML

```javascript // 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.

Jsonix Features

  • Runs in almost any modern browser
  • Runs with CommonJS modules, AMD modules as well as vanilla (globals, without any module loader)
  • Bidirectional (XML -> JS as well as JS -> XML)
  • Implements marshalling (serializing the JavaScript object into XML)
Supports string data and DOM nodes as result
  • Implements unmarshalling (parsing a JavaScript object from XML)
Supports string data, DOM nodes, URLs or files (with Node.js) as source
  • Driven by declarative XML/JS mappings which control how JavaScript object is converted into XML or vice versa
  • Mappings can be automatically generated based on the XML Schema
  • Strongly-structured - XML/object mappings describe structures of JavaScript objects
  • Strongly-typed - Conversion between string content on XML side and values on the JavaScript side is controlled by declared property types
  • Provides extensible type system
Supports most XML Schema simple types (inlcuding QNames) Supports enumerations, list and union simple types Allows adding own simple types Supports complex types consisting of several properties Supports deriving complex types by extension
  • Provides advanced property system
Value, attribute, element, element reference properties for string processing of XML content Any attribute, any element properties for "lax" processing for XML content