Question 1

How do I create attributes?

Accepted Answer

Start the key with @. In the example, "@id": "A-1042" inside order becomes <order id="A-1042">. Every other key becomes a child element.

Question 2

How are arrays converted?

Accepted Answer

Each array item repeats the element named after the key, so "item": [ ... ] with two entries gives two elements. If the whole JSON is an array, it is wrapped in the root element and each entry becomes an .

Question 3

When is the Root element setting used?

Accepted Answer

XML needs exactly one root element. If your JSON is an object with a single key, like the example, that key becomes the root and the setting is ignored. Objects with several keys, arrays and single values are wrapped in an element with the name you set.

Question 4

What if a key isn't a valid XML name?

Accepted Answer

It's changed into one and the status line says so. Spaces and other characters XML doesn't allow become underscores, and a name that starts with a digit, a dot or a dash gets an underscore in front, so “1st place” becomes _1st_place. XML names can't contain spaces or start with a digit.

Question 5

What happens to null, true and empty strings?

Accepted Answer

Null and empty strings become empty elements such as <note/>. Numbers and true or false are written as the element's text. Characters like & and < in values are escaped as & and <.

JSON	XML
`{"order": {...}}`	`<order>...</order>` as the root
`"name": "Ada"`	`<name>Ada</name>`
`"@id": "A-1042"`	`id="A-1042"` on the parent element
`"item": [{...}, {...}]`	Two `<item>` elements
`"note": null`	`<note/>`
`{"a": 1, "b": 2}`	Wrapped in `<root>`

Convert JSON to XML

How to convert JSON to XML

Conversion rules

Keys that can’t be element names