An example of how JSONP-Fu works.

jsonpfu-example.js

/*
 * In order to include libraries, we need to know
 * the absolute path to the jsonp-fu directory.
 *
 * BTW, jfu is a shortcut to jsonpfu that is defined
 * as a part of the library.
 */
jfu.set_path('/path/to/jsonp-fu/');

/*
 * Loads the TwitPic API plugin so that we can make
 * calls against the TwitPic API.
 */
jfu.load('twitpic', {});

/*
 * Since loading JS can take time, we use a ready()
 * function very similar to jQuery's to register a
 * callback that will fire when the TwitPic API
 * plugin is ready for action.
 */
jfu.ready('twitpic', function () {

	jfu.lib('twitpic').users.show({username: 'meltingice'}, function (user) {
		console.log(user);
	});

});