Service method in AngularJS helps you to define service and method to it. In the following example, we have injected a simple addition service, which adds two numbers.
<! DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Event Registration</title> </head> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script> <body> <h3> IT Notes</h3> <div ng-app = "mainApp" ng-controller = "DemoController"> <p>Result: {{result}}</p> </div> <script> var mainApp = angular.module("mainApp", []); mainApp.service('AdditionService', function(){ this.ADDITION = function(a,b) { return a+b; } }); mainApp.controller('DemoController', function($scope, AdditionService) { $scope.result = AdditionService.ADDITION(5,6); }); </script> </body> </html>