Utilize Angular's built-in services

adoptingAngular_example2.js

// Instead of using $.ajax for an API call...
angular.module('app', [])
  .factory('addressBook', function() {
    var data = null;
    
    return {
      getAddresses: function() {
        $.ajax({
          url: '/path/to/data',
          dataType: 'json',
          success: function(result) {
            data = result;
          },
          error: function(error) {}
        });
      }
    };
  });
  
// Try using Angular's $http service
angular.module('app')
  .factory('addressBook', function($http){
    return {
      getAddresses: function() {
        return $http({
          method: 'GET',
          url: '/path/to/data'
        });
      }
    };
  });