Crossdomain. JSONPath - XPath for JSON. JSONPath expressions always refer to a JSON structure in the same way as XPath expression are used in combination with an XML document.
Since a JSON structure is usually anonymous and doesn't necessarily have a "root member object" JSONPath assumes the abstract name $ assigned to the outer level object. JSONPath expressions can use the dot–notation $.store.book[0].title or the bracket–notation. Converting Between XML and JSON. May 31, 2006 More and more web service providers seem to be interested in offering JSON APIs beneath their XML APIs.
One considerable advantage of using a JSON API is its ability to provide cross-domain requests while bypassing the restrictive same domain policy of the XmlHttpRequest object. On the client-side, JSON comes with a native language-compliant data structure, with which it performs much better than corresponding DOM calls required for XML processing. Finally, transforming JSON structures to presentational data can be easily achieved with tools such as JSONT. So if you're working in this space, you probably need to convert an existing XML document to a JSON structure while preserving the following: JSON. Douglas Crockford's Wrrrld Wide Web.