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    <p>First, your <code>success()</code> handler just returns the data, but that's not returned to the caller of <code>getData()</code> since it's already in a callback. <code>$http</code> is an asynchronous call that returns a <code>$promise</code>, so you have to register a callback for when the data is available.</p> <p>I'd recommend looking up Promises and the <a href="http://docs.angularjs.org/api/ng.$q">$q library</a> in AngularJS since they're the best way to pass around asynchronous calls between services.</p> <p>For simplicity, here's your same code re-written with a function callback provided by the calling controller:</p> <pre><code>var myApp = angular.module('myApp',[]); myApp.service('dataService', function($http) { delete $http.defaults.headers.common['X-Requested-With']; this.getData = function(callbackFunc) { $http({ method: 'GET', url: 'https://www.example.com/api/v1/page', params: 'limit=10, sort_by=created:desc', headers: {'Authorization': 'Token token=xxxxYYYYZzzz'} }).success(function(data){ // With the data succesfully returned, call our callback callbackFunc(data); }).error(function(){ alert("error"); }); } }); myApp.controller('AngularJSCtrl', function($scope, dataService) { $scope.data = null; dataService.getData(function(dataResponse) { $scope.data = dataResponse; }); }); </code></pre> <p>Now, <code>$http</code> actually already returns a $promise, so this can be re-written:</p> <pre><code>var myApp = angular.module('myApp',[]); myApp.service('dataService', function($http) { delete $http.defaults.headers.common['X-Requested-With']; this.getData = function() { // $http() returns a $promise that we can add handlers with .then() return $http({ method: 'GET', url: 'https://www.example.com/api/v1/page', params: 'limit=10, sort_by=created:desc', headers: {'Authorization': 'Token token=xxxxYYYYZzzz'} }); } }); myApp.controller('AngularJSCtrl', function($scope, dataService) { $scope.data = null; dataService.getData().then(function(dataResponse) { $scope.data = dataResponse; }); }); </code></pre> <p>Finally, there's better ways to configure the <code>$http</code> service to handle the headers for you using <code>config()</code> to setup the <code>$httpProvider</code>. Checkout the <a href="http://docs.angularjs.org/api/ng.$http">$http documentation</a> for examples.</p>
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    1. POHow to use HTTP.GET in AngularJS correctly? In specific, for an external API call?
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