$ HTTP 是通用的AJAX。在大多数情况下，这是你使用什么。随着 $ HTTP 你将要制定 GET ， POST ，删除手动输入电话和处理他们在自己返回的对象。

$http is for general purpose AJAX. In most cases this is what you'll be using. With $http you're going to be making GET, POST, DELETE type calls manually and processing the objects they return on your own.

$资源包裹 $ HTTP 在REST风格的Web API使用的情况。

$resource wraps $http for use in RESTful web API scenarios.

概而言之：RESTful Web服务将是服务，一个端点为基于HTTP的方法，如 GET 与数据类型进行不同的数据类型， POST ， PUT ，删除等，所以有 $资源，你可以调用一个 GET 来获取资源为JavaScript对象，然后改变它，并将其发送回以 POST ，或甚至删除删除。

Speaking VERY generally: A RESTful web service will be a service with one endpoint for a data type that does different things with that data type based on HTTP methods like GET, POST, PUT, DELETE, etc. So with a $resource, you can call a GET to get the resource as a JavaScript object, then alter it and send it back with a POST, or even delete it with DELETE.

...如果是有道理的。

... if that makes sense.