[javascript] How merge two objects array in angularjs?

I want to append following object array with existing one in angulajs for implementing load more feature.

ie,appending AJAX response with existing one each time.

I have one variable, $scope.actions which contains following JSON data,

    {
    "total": 13,
    "per_page": 2,
    "current_page": 1,
    "last_page": 7,
    "next_page_url": "http://invoice.local/activities/?page=2",
    "prev_page_url": null,
    "from": 1,
    "to": 2,
    "data": [
        {
            "id": 2108,
            "action_type_id": 202,
            "user_id": 1
        },
        {
            "id": 2108,
            "action_type_id": 202,
            "user_id": 1
        }
    ]
}

I want to append following JSON response each time this variable.

    {
    "data": [
        {
            "id": 2108,
            "action_type_id": 202,
            "user_id": 1
        },
        {
            "id": 2108,
            "action_type_id": 202,
            "user_id": 1
        }
    ]
}

I have tried with $scope.actions.data.concat(data.data);

but it is not working and getting following error message

$scope.actions.data.concat is not a function

Simple

var a=[{a:4}], b=[{b:5}]

angular.merge(a,b) // [{a:4, b:5}]

Tested on angular 1.4.1

This works for me :

$scope.array1 = $scope.array1.concat(array2)

In your case it would be :

$scope.actions.data = $scope.actions.data.concat(data)

$scope.actions.data.concat is not a function 

same problem with me but i solve the problem by

 $scope.actions.data = [].concat($scope.actions.data , data)