angular-service-example

function Logger() {}

Logger.prototype.log = function(message) {
	console.log('Logger: ' + message)
};

function AppLogger() {
	
	Logger.call(this);
	
	this.alert = function(entry) {
		alert('Entry: ' + entry)
	}
}; 

AppLogger.prototype = Object.create(Logger.prototype);

app.service('loggerService', AppLogger);

app.controller("customersController", function($scope, customerService, loggerService) {
  $scope.customers = customerService.customers;
  
  loggerService.log('customersController logged');
  loggerService.alert('customersController alerted');
});