AngularJS template help

gistfile1.js

var locationtApp = angular.module('locationApp', []);

locationtApp.controller('LocationListCtrl', ['$scope', function ($scope) {

    var phones = [
      {
          'src': 'http://localhost/images/image1.jpg'
      },
      {
          'src': 'http://localhost/images/image2.jpg'
      },
      {
          'src': 'http://localhost/images/image3.jpg'
      },
      {
          'src': 'http://localhost/images/image4.jpg'
      },
      {
          'src': 'http://localhost/images/image5.jpg'
      },
      {
          'src': 'http://localhost/images/image6.jpg'
      },
      {
          'src': 'http://localhost/images/image7.jpg'
      }
    ],
        groups = [];
    phones.forEach(function (phone, i) {
        var key = Math.floor(i / 4);
        if (typeof groups[key] === 'object') {
            groups[key].push(phone);
        } else {
            groups[key] = [phone];
        }
    });
    $scope.groups = groups;
}]);