Using a Factory Provider to Build a factory Service

The factory method provides the capability to implement functionality into a service. It can also be dependent on other service providers, enabling you to build up compartmentalized code. The factory method uses the following syntax, where name is the service name and factoryProvider is a provider function that builds the factory service:

Click here to view code image

factory(name, factoryProvider)

You can inject the factory method with other services, and it returns the service object with the appropriate functionality. The functionality can be a complex JavaScript service, a value, or a simple function. For example, the following code implements a factory service that returns a function that adds two numbers:

Click here to view code image

var app = angular.module('myApp', []);
app.constant('myConst', 10);
app.factory('multiplier', ['myConst', function (myConst) {
  return function(value) { return value + myConst; };
}]);