Read JSON and show in html using angularJS

I'm trying to read data from a Json file in html using AngularJS, but I'm not getting it. Here is part of the index.html code:

    <div ng-app="app">
        <div class="page-header" id="principal" ng-controller="HomeCtrl">
            <div class="divpai" style="width:950px; height: 734px; background-color:#F3E10A" align="center">
                <table class="tclass">
                    <tr>
                        <td style="text-align: center;">
                            <button id="btf1" ng-repeat="menus in mock(0,4)" class="btf" style="width:416px; height: 79px; background-color:#2E5491">{{response.id}}</button>
                        </td>
                        <td style="text-align: center;">
                            <button id="btf5" ng-repeat="menus in mock(4,8)" class="btf" style="width:416px; height: 79px; background-color:#2E5491">{{response.id}}</button>
                        </td>
                    </tr>
                </table>
            </div>
        </div>
    </div>

Follow the JSON code:

{
    "alexa": {
        "#text": "",
        "item": {
            "@attributes": {
                "name": "MenuPrincipal",
                "label": "Menu Principal"
            },
            "#text": "",
            "children": {
                "#text": "",
                "child": [{
                        "@attributes": {
                            "id": "mnu1"
                        }
                    },
                    {
                        "@attributes": {
                            "id": "mnu2"
                        }
                    },
                    {
                        "@attributes": {
                            "id": "mnu3"
                        }
                    },
                    {
                        "@attributes": {
                            "id": "mnu4"
                        }
                    },
                    {
                        "@attributes": {
                            "id": "mnu5"
                        }
                    },
                    {
                        "@attributes": {
                            "id": "mnu6"
                        }
                    },
                    {
                        "@attributes": {
                            "id": "mnu7"
                        }
                    },
                    {
                        "@attributes": {
                            "id": "mnu8"
                        }
                    }
                ]
            }
        }
    }
}

Finally follow the code of my controller.JS:

var app = angular.module('app', []);
app.controller('HomeCtrl', function($scope, $http) {

    $http.get('mock.json').then(function(response) {
        $scope.data = response.data;
    });
});

I have read some questions but still could not find a solution for the case, and in the documentation I did not get a satisfactory solution for any example for a beginner how I resolve.