What is an Injectable Service?

An injectable service in Angular is a TypeScript class decorated with the @Injectable() decorator. This decorator provides metadata that allows Angular’s dependency injection system to create and manage instances of the service class. Injectable services play a fundamental role in Angular development as they provide a way to share functionality, data, and state across different parts of the application.

Syntax:

import { Injectable } from '@angular/core';

@Injectable({
  providedIn: 'root' // or 'any' or specific module
})
export class MyService {
  constructor() { }

  // Service logic here
}

In Angular, services are a great way to share data, functionality, and state across different components in your application. Services are typically injected into components and other services as dependencies, making them easily accessible and maintainable. Mostly services are used to create functions that initiate HTTP calls.