var app = angular.module("userApp", []);

app.controller("userController", function($scope, $http) {

    $scope.getUser = function() {

       return $http.get('https://jsonplaceholder.typicode.com/users').then(

            function successCallback(response) {

                // you can log response here to see what it is

                // or you can simply check network in your browser DevTools

                $scope.users = response.data;

            },

            function errorCallback(response) {

                alert('There was error retrieving users List');

            }

        );

    };

});