这是API是应用程序编程接口。这是真的了很多不同类型的东西的总称。我假设你的意思是网络的API，它通常是基于REST或SOAP为主。所使用的排序的API确实从一个服务的不同而不同。有些与API的工作，像亚马逊基于REST和基于SOAP服务的多种方式。

An API is an Application Programming Interface. This is really a generic term for a lot of different sort of things. I'm assuming you mean "Web APIs" which are usually RESTful or SOAP based. The sort of API that is used really differs from one service to another. Some have multiple ways of working with the API, like Amazon has REST based and SOAP based services.

如果您是从客户端这样上手的***办法，就是真正开始学习JavaScript，然后学习jQuery。然后从那里选择您想编程到服务。您可以通过编码对谷歌地图API学到了大量的JavaScript。这可能是开始，因为它是一个pretty整齐的系统，而不是太难的***地点，需要你有使用Javascript（你可以沿途学习）。

The best way to get started if you are doing this from the client side, is to really start learning Javascript and then learn JQuery. Then from there choose a service you'd like to program to. You could learn a lot of Javascript by coding for the Google Maps API. This is probably the best place to start as it is a pretty neat system, not too difficult, requires you to have a good level of knowledge of Javascript (which you can learn along the way).