Q. AngularJS Services

In AngularJS you can make your own service, or use one of the many built-in services.

• built-in services always start with $ (e.g. $http).

In AngularJS, a service is a function, or object, that is available for, and limited to, your AngularJS application.

Q. Create Your Own Service

var app = angular.module('myApp', []);

app.service('hexafy', function() {
    this.myFunc = function (x) {
        return x.toString(16);
    }
});

Q. Use Your Own Service

app.controller('myCtrl', function($scope, hexafy) {
    $scope.hex = hexafy.myFunc(255);
});