How to remove an item from an array in AngularJS scope?

Question

Simple to-do list, but with a delete button on list page for each item:

Relevant template HTML:

Answer 1

Your issue is not really with Angular, but with Array methods. The proper way to remove a particularly item from an array is with Array.splice. Also, when using ng-repeat, you have access to the special $index property, which is the current index of the array you passed in.

The solution is actually pretty straightforward:

View:

<a ng-click="delete($index)">Delete</a>

Controller:

$scope.delete = function ( idx ) {
  var person_to_delete = $scope.persons[idx];

  API.DeletePerson({ id: person_to_delete.id }, function (success) {
    $scope.persons.splice(idx, 1);
  });
};

Answer 2

You can also use this

$scope.persons = $filter('filter')($scope.persons , { id: ('!' + person.id) });

Answer 3

I would use the Underscore.js library that has a list of useful functions.

without

without_.without(array, *values)

Returns a copy of the array with all instances of the values removed.

_.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
// => [2, 3, 4]

Example

var res = "deleteMe";

$scope.nodes = [
  {
    name: "Node-1-1"
  },
  {
    name: "Node-1-2"
  },
  {
    name: "deleteMe"
  }
];
    
$scope.newNodes = _.without($scope.nodes, _.findWhere($scope.nodes, {
  name: res
}));

See Demo in JSFiddle.

---

filter

var evens = _.filter([1, 2, 3, 4, 5, 6], function(num){ return num % 2 == 0; });

// => [2, 4, 6]

Example

$scope.newNodes = _.filter($scope.nodes, function(node) {
  return !(node.name == res);
});

See Demo in Fiddle.

Answer 4

If you have any function associated to list ,when you make the splice function, the association is deleted too. My solution:

$scope.remove = function() {
    var oldList = $scope.items;
    $scope.items = [];

    angular.forEach(oldList, function(x) {
        if (! x.done) $scope.items.push( { [ DATA OF EACH ITEM USING oldList(x) ] });
    });
};

The list param is named items. The param x.done indicate if the item will be deleted.

Another references: Another example

Hope help you. Greetings.

Answer 5

You'll have to find the index of the person in your persons array, then use the array's splice method:

$scope.persons.splice( $scope.persons.indexOf(person), 1 );

Answer 6

$scope.removeItem = function() {
    $scope.items.splice($scope.toRemove, 1);
    $scope.toRemove = null;
};

this works for me!