如何在AngularJS中創建一個類似於對象數組對象的空對象？

Question

我有以下對象數組：

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

我需要創建與這樣的空值的類似對象，

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

，這樣我可以將其推到相同的陣列（$scope.users.push($scope.newUser);） ，讓它看起來像這樣：

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

然而，陣列$scope.users不會總是有相同的陣列對象。我需要它，即使我的數組更改爲不同的東西，例如，像這樣的工作：

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

我怎樣才能做到這一點？

Answer 1

假設總有東西要模仿數組中，得到的第一個對象，循環鍵，使空白對象：

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

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

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