javascript - 是否可以向现有 JSON 数据添加新属性？

Question

这个问题已经有答案了:

Is it possible to add dynamically named properties to JavaScript object? (22 个回答)

已关闭 7 年前。

我有以下 JSON 数据:

$scope.users = [{ "id": 1, "first_name": "Philip",  "country": "Indonesia" },
                { "id": 2, "first_name": "Judith", "country": "China" },
                { "id": 3, "first_name": "Julie",  "country": "Finland"},
                { "id": 4, "first_name": "Gloria",  "country": "Indonesia"}}];

我想添加一个像这样的新属性:

$scope.users = [{ "id": 1, "first_name": "Philip",  "country": "Indonesia", "new_field":4 },
                { "id": 2, "first_name": "Judith", "country": "China","new_field":4 },
                { "id": 3, "first_name": "Julie",  "country": "Finland","new_field":4},
                { "id": 4, "first_name": "Gloria",  "country": "Indonesia","new_field":4}}];

这可能吗？如果是，如何做到这一点？

Answer 1

使用这个:

for(var i=0;i<$scope.users.length;i++)
    $scope.users[i].new_field =4;