AngularJS Essentials

Dependency Injection and Services
In order to configure our provider, we need to use the config function of the
Module API, injecting the service through its function. In the following code, we are
calling the setParkingRate method of the provider, overwriting the default rate
that comes from the parkingConfig method.
config.js
parking.config(function (parkingServiceProvider) {
parkingServiceProvider.setParkingRate(10);
});
The other service components such as constants, values, factories, and services are
implemented on the top of the provider component, offering developers a simpler
way of interaction.
Using AngularJS built-in services
Now, it's time to check out the most important and useful built-in services for
our daily development. In the following topics, we will explore how to perform
communication with the backend, create a logging mechanism, support timeout,
single-page application, and many other important tasks.
Communicating with the backend
Every client-side JavaScript application needs to communicate with the backend. In
general, this communication is performed through an interface, which is exposed by
the server-side application that relies on the HTTP protocol to transfer data through
the JSON.
HTTP, REST, and JSON
In the past, for many years, the most common way to interact with the backend was
through HTTP with the help of the GET and POST methods. The GET method was
usually used to retrieve data, while POST was used to create and update the same
data. However, there was no rule, and we were feeling the lack of a good standard
to embrace.
The following are some examples of this concept:
GET /retrieveCars HTTP/1.1
GET /getCars HTTP/1.1
GET /listCars HTTP/1.1
GET /giveMeTheCars HTTP/1.1
GET /allCars HTTP/1.1
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