How to call another service variable data in new service using angular js

for data sharing across the controller in angular JS you can use localstorge, sessionstorage or $rootScope

way to share data through localstorage :

localStorage.setItem('title', $scope.title);
// Retrieve the title
$scope.title = localStorage.getItem('title'); 

way to share data through sessionStorage:

 sessionStorage.setItem(key, value);
 // to get the data 
 sessionStorage.getItem(key, value);

way to share data through rootScope:

var app = angular.module("myApp", []);
      app.run(function($rootScope) {
         $rootScope.userData = {};
         $rootScope.userData.firstName = "Ravi";
         $rootScope.userData.lastName = "Sharma";
      });

      app.controller("firstController", function($scope, $rootScope) {
           console.log($rootScope.userData.firstName)
      });