---
title: "Angular JS custom Services Example."
description: "Angular JS custom Services Example."
author: "Sandra Emily"
published: 2024-06-24
updated: 2024-06-25
canonical: https://www.mindstick.com/forum/160778/angular-js-custom-services-example
category: "angular js"
tags: ["web development", "angular js", "front-end development"]
reading_time: 2 minutes
---
# Angular JS custom Services Example.
[Angular](https://www.mindstick.com/articles/13081/advantages-disadvantages-of-angularjs-is-that-ideal-for-your-project) JS custom Services Example.
## Replies
### Reply by Ravi Vishwakarma
[**Creating custom services**](https://www.mindstick.com/forum/160773/explain-angularjs-services-with-examples) in AngularJS is a way to encapsulate **reusable code**, **such as business logic**, **data retrieval**, or utility functions, making them available across your application.
You can create and use custom services using different methods: `service`, `factory`, and `provider`.
## Step 1: Define the AngularJS module and service
```javascript
var app = angular.module('myApp', []);
app.service('MathService', function() {
this.add = function(a, b) {
return a + b;
};
this.subtract = function(a, b) {
return a - b;
};
});
```
## Step 2: Use the service in a controller
```javascript
app.controller('MainController', ['$scope', 'MathService', function($scope, MathService) {
$scope.addition = MathService.add(5, 3); // 8
$scope.subtraction = MathService.subtract(5, 3); // 2
}]);
```
## Step 3: Create the HTML to use the controller
```html
Service Example
Addition: {{ addition }}
Subtraction: {{ subtraction }}
```
## Note
- **Service**: Uses a constructor function to create a singleton service. It’s suitable for simple services.
- **Factory**: Returns an object or a function. It’s more flexible than a service.
- **Provider**: Provides the most flexibility. It allows configuration during the configuration phase of the application.
---
Original Source: https://www.mindstick.com/forum/160778/angular-js-custom-services-example
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