What is the role of services in AngularJS ?

AngularJS supports the concepts of Separation of Concerns using services architecture. Services are javascript functions and are responsible to do a specific tasks only. ... Services are normally injected using dependency injection mechanism of AngularJS.

Services are a set of code that can be shared by different components of an application. So for example if you had a data component that picked data from a database, you could have it as a shared service that could be used across multiple applications.

In AngularJS, a service is a function, or object, that is available for, and limited to, your AngularJS application. AngularJS has about 30 built-in services. One of them is the $location service. The $location service has methods which return information about the location of the current web page