The controller defines a dependency to the $scope and the $http module. An HTTP GET request to the countries.json end point is carried out with the get method. It returns a $promise object with a success and an error method. Once successful, the JSON data is assigned to $scope.posts to make it available in the template.

The $http service supports the HTTP verbs get, head, post, put, delete and jsonp. We are going to look into more examples in the following chapters.

The $http service automatically adds certain HTTP headers like for example X-Requested-With: XMLHttpRequest. But you can also set custom HTTP headers by yourself using the $http.defaults function.

Example :-

Script :-

  var countryApp = angular.module('countryApp', []);
  countryApp.controller('CountryCtrl', function ($scope, $http){
    $http.get('countries.json').success(function(data) {
      $scope.countries = data;
    });
  });

HTML :-

<table>
  <tr>
    <th>Country</th>
    <th>Code</th>
  </tr>
  <tr ng-repeat="country in countries">
    <td>{{country.name}}</td>
    <td>{{country.code}}</td>
  </tr>
</table>