¿Cuál es la diferencia entre fábrica de servicios y proveedor en AngularJS?

What is the difference between service factory and provider in AngularJS?

Angular provides us with three ways to create and register our own service. Factory: A factory is a simple function which allows you to add some logic before creating the object. It returns the created object. Provider: A provider is used to create a configurable service object.

We should use a provider when we are creating a service for the entire application. For example, when we are creating service to retrieve data from the API we need to set the API key once per application. We can set that in the config of app and pass that to the setter function of the provider.

Provider vs Factory vs Service A factory is a special case of a provider when all you need in your provider is a $get() function. It allows you to write it with less code. A service is a special case of a factory when you want to return an instance of a new object, with the same benefit of writing less code.

A provider is an instruction to the Dependency Injection system on how to obtain a value for a dependency. Most of the time, these dependencies are services that you create and provide. For the final sample application using the provider that this page describes, see the live example / download example .

A provider is a person who gives someone something they need. If your parents both have jobs so they can feed you and buy you what you need, you can call them providers. Your mom’s a provider if she works so she can care for you, put food on the table, and send you to school.

Use a provider when you want to provide module-wide configuration for your service object before making it available. In order to extensively show the difference between a Factory, Service, and Provider, we’re going to build the same service in three separate ways. The services are going to utilize the iTunes API as well as promises with $q.

The Factory recipe constructs a new service using a function with zero or more arguments (these are dependencies on other services). The return value of this function is the service instance created by this recipe. Note: All services in AngularJS are singletons. That means that the injector uses each recipe at most once to create the object.

In AngularJS, services are reusable singleton objects that are used to organize and share code across your app. They can be injected into controllers, filters, directives. AngularJS provides you three ways : service, factory and provider to create a service. Factory.

A provider is basically an object that tells Angular injector how to obtain or create a dependency. When Angular creates a new instance of a c omponent class, it determines which services or other dependencies that component needs by looking at the constructor parameter types.