在mdata中的数据表中获取嵌套数组对象

Question

下面是我的json结构，我需要在datatable中的列中检索ContactRole.staffRoleDescription数据。 我尝试过一些像"mdata" :"ContactRole.staffRoleDescription"这样的方法。但我没有得到输出。如果不能通过普通的数据表语法来完成，那么如何通过迭代来实现

 {
                "favoriteStatus": true,
                "favoriteId": 1,
                "name": "Jason Parker",
                "phoneNumber": "+1 987-654-3210",
                "businessRole": "Account Executive",
                "ContactRole": [
                    {
                        "id": "1",
                        "roleStatus": "internal",
                        "staffRoleDescription": "MSC"
                    },
                    {
                        "id": "2",
                        "roleStatus": "external",
                        "staffRoleDescription": "AP (Apple Professional)"
                    }
                ],
                "email": "email@domain.com"
    }

Answer 1

以下代码正在运行：

table = {
    "favoriteStatus": true,
    "favoriteId": 1,
    "name": "Jason Parker",
    "phoneNumber": "+1 987-654-3210",
    "businessRole": "Account Executive",
    "ContactRole": [
        {
            "id": "1",
            "roleStatus": "internal",
            "staffRoleDescription": "MSC"
        },
        {
            "id": "2",
            "roleStatus": "external",
            "staffRoleDescription": "AP (Apple Professional)"
        }
    ],
    "email": "email@domain.com"
}

for (i = 0; i < 2; i++) {
    alert(table["ContactRole"][i]["staffRoleDescription"])
}