About

This XML to JavaScript Converter transforms hierarchical XML data into native JavaScript Objects (JSON). Unlike simple string replacements, this tool uses a sophisticated recursive algorithm to traverse the Document Object Model (DOM).

It intelligently handles the impedance mismatch between XML (document-centric) and JSON (data-centric). Repeating XML tags are automatically detected and converted into Array structures, while attributes are mapped to properties using a configurable prefix (default @_). This ensures no data fidelity is lost during the transformation, making it ideal for API migrations, configuration parsing, and legacy system integration.

Formulas

The core transformation logic follows this recursive mapping rule:

f(node) =

{

text if isText(node){ attributes, children } if isElement(node)

Where attributes are mapped to keys prefix + attr.name, and repeated child keys imply Array generation.

Reference Data

Feature	XML Structure	JavaScript Object (JSON)
Root	Single Root Element	Single Root Object
Attributes	`<node id="1">`	`"@_id": "1"`
Repeated Tags	`<item>A</item><item>B</item>`	`"item": ["A", "B"]`
Text Content	`<val>Hello</val>`	`"val": "Hello"` (or `"#text": "Hello"`)
Namespaces	`<xsl:template>`	`"xsl:template": { ... }`

Frequently Asked Questions

Attributes are converted into object properties. To distinguish them from child tags, they are prefixed with a special character (default is '@_') in the resulting JSON object.

Yes. CDATA sections are treated as raw text content and will be extracted as string values within the corresponding object key.

If the "Always Array" option is disabled, only repeated tags become arrays. However, if multiple tags share the same name within a parent, the tool automatically groups them into an array to preserve structure.

Mostly, yes. However, since XML order matters more than JSON order, and JSON lacks attributes vs text distinction natively without conventions (like the "@_" prefix), round-tripping requires consistent use of these conventions.