如何在AngularJS中创建一个类似于对象数组对象的空对象？

Question

我有以下对象数组：

$scope.users = [ 
    { 
     ID: "1", 
     Name: "Hege", 
     Username: "Pege", 
     Password: "hp", 
    }, 
    { 
     ID: "2", 
     Name: "Peter", 
     Username: "Pan", 
     Password: "pp" 
    } 
]; 

我需要创建与这样的空值的类似对象，

$scope.newUser = { 
    ID: "", 
    Name: "", 
    Username: "", 
    Password: "" 
} 

，这样我可以将其推到相同的阵列（$scope.users.push($scope.newUser);） ，让它看起来像这样：

$scope.users = [ 
    { 
     ID: "1", 
     Name: "Hege", 
     Username: "Pege", 
     Password: "hp" 
    }, 
    { 
     ID: "2", 
     Name: "Peter", 
     Username: "Pan", 
     Password: "pp" 
    }, 
    { 
     ID: "", 
     Name: "", 
     Username: "", 
     Password: "" 
    } 
]; 

然而，阵列$scope.users不会总是有相同的阵列对象。我需要它，即使我的数组更改为不同的东西，例如，像这样的工作：

$scope.users = [ 
    { 
     SID: "pepe", 
     Name: "Peter", 
     School: "Primary School" 
    }, 
    { 
     SID: "hepe", 
     Name: "Hege", 
     School: "Junior School" 
    } 
]; 

我怎样才能做到这一点？

Answer 1

假设总有东西要模仿数组中，得到的第一个对象，循环键，使空白对象：

if ($scope.users.length) { 
    var defaultUser = $scope.users[0]; 

    $scope.newUser = {}; 
    for (var key in defaultUser) { 
     $scope.newUser[key] = ""; 
    } 

    $scope.users.push($scope.newUser); 
}