AngularJS .destroy() shows console error, but works? -

i use destroy() function this:

$scope.cities[i].destroy(); 

then when use app works fine, console says:

$scope.cities[i] undefined 

however without it, doesn't work. should ignore error?

more code

$scope.somefunction= function (id) {     (var = 0; < $scope.cities.length; i++) {         if ($scope.cities[i] == id) {             $scope.splicecities(i);             $scope.cities[i].destroy();          }      }      $scope.splicecities = function(i) {         $scope.cities.splice(i, 1);     }; } 

function called on ng-click on country.

splice mutates array, i index points element when calling destroy(). if i pointed last element before splice, error. fortunately splice returns elements spliced out array, try this:

$scope.somefunction = function (id) {     (var = 0; < $scope.cities.length; i++) {         if ($scope.cities[i].id == id) {             var spliced = $scope.cities.splice(i, 1);             spliced[0].destroy();             break;         }      } }