JSON with Padding (JSONP)

JSONP (or JSON-P) is a means of loading pieces of JSON or JavaScript code from a web page from one or more sites other than the one the user is visiting.

For security reasons, JSONP is generally not recommended for use on the Internet. However, the technique, which is full described in the Wikipedia article referenced below, is still useful, especially for web developers operating on multiple domains or otherwise trust a different domain.

Resources: Wikipedia