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Parses JavaScript objects into XML


js2xmlparser is a Node.js module that parses JavaScript objects into XML.

Since XML is a data-interchange format, js2xmlparser is designed primarily for JSON-type objects, arrays and primitive data types, like many of the other JavaScript to XML parsers currently available for Node.js.

However, js2xmlparser is capable of parsing any object, including native JavaScript objects such as Date and RegExp, by taking advantage of each object's toString function or, if this function does not exist, the String constructor.

js2xmlparser also has support for the new Map and Set objects introduced in ECMAScript 2015, treating them as JSON-type objects and arrays respectively. Support for Maps is necessary to generate XML with elements in a specific order, since JSON-type objects do not guarantee insertion order. Map keys are always converted to strings using the method described above.

js2xmlparser also supports a number of constructs unique to XML:

  • attributes (through an attribute property in objects)
  • mixed content (through value properties in objects)
  • multiple elements with the same name (through arrays)

js2xmlparser can also pretty-print the XML it outputs.

The easiest way to install js2xmlparser is using npm:

npm install js2xmlparser

You can also build js2xmlparser from source using gulp:

git clone
npm install
typings install

You'll need to install gulp and typings first if you don't have them:

npm install -g gulp
npm install -g typings

You can then copy the folder into your node_modules directory.

The default target will build the production variant of js2xmlparser, run all tests, and build the documentation.

You can build the production variant without running tests using the target prod. You can also build the development version using the target dev. At the moment, the only difference between the two is that the development version includes source maps.

The documentation for the current version is available here.

You can also build the documentation using gulp:

gulp docs

The following example illustrates the basic usage of js2xmlparser:

var js2xmlparser = require("js2xmlparser");
var obj = {
    "firstName": "John",
    "lastName": "Smith",
    "dateOfBirth": new Date(1964, 7, 26),
    "address": {
        "@": {
            "type": "home"
        "streetAddress": "3212 22nd St",
        "city": "Chicago",
        "state": "Illinois",
        "zip": 10000
    "phone": [
            "@": {
                "type": "home"
            "#": "123-555-4567"
            "@": {
                "type": "cell"
            "#": "890-555-1234"
            "@": {
                "type": "work"
            "#": "567-555-8901"
    "email": ""
console.log(js2xmlparser.parse("person", obj));

This example produces the following XML:

<?xml version='1.0'?>
    <dateOfBirth>Wed Aug 26 1964 00:00:00 GMT-0400 (Eastern Summer Time)</dateOfBirth>
    <address type='home'>
        <streetAddress>3212 22nd St</streetAddress>
    <phone type='home'>123-555-4567</phone>
    <phone type='cell'>890-555-1234</phone>
    <phone type='work'>567-555-8901</phone>

Additional examples can be found in examples/example.js.

js2xmlparser includes a set of tests to verify core functionality. You can run the tests using gulp:

gulp test

The test target builds the production variant of js2xmlparser before running the tests. The test-prod target does the same thing, while the test-dev target builds the development variant first instead.

js2xmlparser is licensed under the Apache License 2.0. Please see the file for more information.