The $http service is a core Angular service. This service is used to communicate with remote HTTP servers via the browser's XMLHttpRequest object or JSONP. The $http API is based on the promise APIs exposed by the $q service. This service, unsurprisingly, exposes methods that reflect the HTTP verb names, get, head, post, put, delete, and so on. The typical way of calling these methods is as follows:

$http.get('/someUrl')
    .success(function(data, status, headers, config) {
      // this callback is called asynchronously
      // when the response is available
    })
    .error(function (data, status, headers, config) {
      // called asynchronously if an error occurs
      // or server returns response with an error status
    });

So, let's see an example of using the $http service. Postcodes.io is a free and open source postcode and Geolocation API for the UK. It exposes many API endpoints. We'll specifically use the one that gives us information about a random postcode...