AngularJS Essentials

Dependency Injection and Services
return {
plate: plate,
color: color
};
}();
Now, we are able to access the color but not the entrance of the car:
> console.log(car.plate);
6MB006
> console.log(car.color);
Blue
> console.log(car.entrance);
undefined
Beyond that, we can apply another convention by prefixing the private members
with _, making the code much easier to understand:
var car = function () {
var _plate = "6MBV006";
var _color = "Blue";
var _entrance = "2013-12-09T23:46:15.186Z ";
return {
plate: _plate,
color: _color
};
}();
This is much better than the old-school fashion implementation of the first example,
don't you think? This approach could be used to declare any kind of AngularJS
component, such as services, controllers, filters, and directives.
In the following code, we have created our parkingService using a factory function
and the Revealing Module Pattern:
services.js
parking.factory("parkingService", function () {
var _calculateTicket = function (car) {
var departHour = new Date().getHours();
var entranceHour = car.entrance.getHours();
var parkingPeriod = departHour – entranceHour;
var parkingPrice = parkingPeriod * 10;
return {
period: parkingPeriod,
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