Angular Service Variables

HTML

<div ng-app="myApp" ng-controller="ctrl">
    <form name="myForm" ng-submit="act()">
        <input type="checkbox" ng-model="item.checked" ng-repeat="item in items">
        <button type="submit">Submit</button>
    </form>
</div>

JavaScript

var app = angular.module('myApp', []);

function ctrl($scope) {
    $scope.items = [{
        _id: 'a'
    }, {
        _id: 'b'
    }, {
        _id: 'c'
    }];

    $scope.act = function () {
        var checkedItems = [];
        angular.forEach($scope.items, function (item) {
            if (item.checked !== undefined && item.checked) checkedItems.push(item);
        });
        console.log(checkedItems)
    }
}