How to create custom services in AngularJS

Creating custom services in AngularJS involves defining a service factory function that encapsulates the functionality you want to provide and registering it with the AngularJS module. Here's a step-by-step guide on how to create custom services in AngularJS:

1. Define the Service Factory Function: First, define a function that will serve as the factory for your custom service. This function should return an object or a function that represents the service.

2. Register the Service with the Module: Register the service factory function with your AngularJS module using the factory method.

3. Inject the Service: You can now inject your custom service into controllers, directives, or other services within your AngularJS application.

Here's an example of creating a custom service in AngularJS:

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// Define the custom service factory function
angular.module('myApp').factory('customService', function() {
    var service = {};

    service.doSomething = function() {
        // Functionality you want to provide
        console.log('Doing something...');
    };

    return service;
});

In this example:

• We've defined a factory function named customService which returns an object containing the doSomething method.
• Inside doSomething, you can add any functionality you want your service to provide.

To use this custom service in your AngularJS application, you need to inject it into a controller, directive, or another service:

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angular.module('myApp').controller('MyController', ['$scope', 'customService', function($scope, customService) {
    // Use the custom service
    customService.doSomething();
}]);

In this controller, we've injected the customService and used its doSomething method.

Remember to include your custom service file in your HTML, after including AngularJS:

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<script src="angular.js"></script>
<script src="customService.js"></script>

With this setup, your custom service is now available for use throughout your AngularJS application.