add and remove items between arrays in angular

This question already has an answer here:

How do I remove a particular element from an array in JavaScript? 63 answers

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You can get index as second parameter of angular.forEach. Then us splice to remove the item from original array. Check the code below.

            angular.forEach($scope.results, function (item, index) {
                if (item.selected) {
                    $scope.list.push(item);
                    $scope.results.splice(index, 1);
                };
            });

I just realized there is a drawback in using splice inside angular.forEach loop that it will reindex the array after removing the item. So the immediate next item will be skipped if an item is removed.

So below would be the right solution.

var len = $scope.results.length;
while (len--) {
    var item = $scope.results[len];
    if (item.selected) {
       $scope.list.push(item);
       $scope.results.splice(len, 1);
    };
}

Thanks.

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