AngularJS 1.5.x

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope, personaService) {
  
  personaService.startGetConsulta(2000).then(null, null, function(data){
    $scope.data = data;
  });
  
});


    angular.module('plunker').service('personaService', PersonaService);
    
    PersonaService.$inject = ['$http', '$q', '$interval'];
    function PersonaService($http, $q, $interval){	
    	var pollingInterval;
    	var count= 1;

        this.getConsulta = getConsulta;
    	this.startGetConsulta = startGetConsulta;
    	this.stopGetConsulta = stopGetConsulta;
    	
    	function startGetConsulta(interval){
    		if(pollingInterval){
    			return $q.resolve();
    		}
    		var deferred = $q.defer();
    		
            getConsulta().then(function(data){
    		    deferred.notify(data);
    		}, function(response){
    			deferred.reject(response);
    		});
    		pollingInterval = $interval(function(){
    			console.log('Fireinterval');
    			getConsulta().then(function(data){
    				deferred.notify(data);
    			}, function(response){
    				deferred.reject(response);
    			});
    			count++;
    		}, interval);
    		
    		return deferred.promise;
    	}
    	
    	function stopGetConsulta(){
    		if(angular.isDefined(pollingInterval)) {
    			$interval.cancel(pollingInterval);
    		}
    		pollingInterval = null;
    	}
    	
    	function getConsulta(){
    		return $http.get('https://jsonplaceholder.typicode.com/posts/' + count)
    			.then(function(response){ return response.data; } );
    	}
    }

<!DOCTYPE html>
<html ng-app="plunker">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="angular.js@1.5.x" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.11/angular.min.js" data-semver="1.5.11"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
    <p>Hello {{data | json}}!</p>
  </body>

</html>

/* Put your css in here */