How I call api in angularjs

sampleApp.controller('MarketsCtrl', ['$scope', '$http', function($scope, $http) {

$http.get("https://bittrex.com/api/v1.1/public/getmarketsummary?market=btc-xem")
   .then(function(data){
    $scope.price = data.Last;

   }).
   error(function(datas) {
      log error
  });
});