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AngularJS dependency providers

In AngularJS (specifically version 1.3), dependency providers are the fundamental recipe types used to create and configure services and values for the application^[600-developer-frontend-angular-angular-01.md]. These providers allow developers to share data and logic across different controllers and components^[600-developer-frontend-angular-angular-01.md].

Provider Types

AngularJS offers several methods to register these providers, primarily through the module API. The main types include:

  • value: Used to register a simple value or object (a constant). It is the simplest form of provider^[600-developer-frontend-angular-angular-01.md].
  • constant: Registers a value that can be injected into configuration functions (unlike value, which cannot)^[600-developer-frontend-angular-angular-01.md].
  • factory: A function that is responsible for creating the value or service. It is the most common and flexible way to create a service^[600-developer-frontend-angular-angular-01.md].
  • service: Registers a constructor function for a service. AngularJS will instantiate it with new^[600-developer-frontend-angular-angular-01.md].

Use in Controllers

A primary function of these providers is to act as a shared data source. By injecting a provider (such as a factory or service) into multiple controllers, the application can ensure that different parts of the UI are accessing the exact same data or state^[600-developer-frontend-angular-angular-01.md].

  • [[AngularJS]]
  • [[Dependency Injection]]
  • [[AngularJS Directives]]

Sources

^[600-developer-frontend-angular-angular-01.md]