AngularJS watch array of objects for data change

Question

I\'m implementing a shopping cart and want to store the data in localStorage. I want to watch the variable $scope.cart for change so that I can update the local

Answer 1

$watch only evaluate string or function parameter in its first argument. Change your $watch like this :

$scope.$watch('cart.name + cart.id + cart.amount', $scope.updateCart());

OR

$scope.$watch('cart', $scope.updateCart, true);

See reference API