jQuery.ajax with and without deferred

gistfile1.js

//
//	With classic callbacks
//

var callApi = function(success) {
	$.ajax({
		url: '/hello',
		success: function(data) {
			// Do callApi stuff here.

			// Call the success argument
			if (success) success(data)
		}
	});
}

var callApi2 = function(success2) {
	callApi(success: function(data) {
		// Do callApi2 stuff here.

		// Call the success2 argument
		if (success2) success2(data)
	});
}

callApi2(function(data) {
	// Do external stuff
});



//
//	With jQuery.Deferred
//

var callApi = function() {
	deferred = $.ajax({
		url: '/hello'
	});

	deferred.done(function(data) {
		// Do callApi stuff here.
	});

	return deferred;
}

var callApi2 = function () {
	deferred = callApi();

	deferred.done(function(data) {
		// Do callApi2 stuff here.
	});

	return deferred;
}

deferred = callApi2();
deferred.done(function(data) {
	// Do external stuff
});