javascript - 将 JSON 添加到空数组问题

Question

我有一个顶级 JSON 结构如下：

{
    "video": [],
    "messages": [],
    "notifications": []
}

我有一个数据库输出（在变量“结果”中），如下我想推入“视频”数组：

[
    {
        "_id": "5f98ab906439155cfc6f9afb",
        "status": "NOT_STARTED",
        "date": "2020-10-27T23:21:52.683Z",
        "callInvitees": [
            {
                "username": "user1"
            },
            {
                "username": "user2"
            }
        ]
    },
    {
        "_id": "5f98aba0789e163e0c78908f",
        "status": "NOT_STARTED",
        "date": "2020-10-27T23:22:08.048Z",
        "callInvitees": [
            {
                "username": "user1"
            }
        ]
    }
]

我的代码是：

let dashboardJSON = { "video": [], "messages": [], "notifications": [] };
dashboardJSON.video.push(result)

它有效，但我最终得到了太多的数组（我认为） - 它看起来如下：

{
    "video": [
        [
            {
                "_id": "5f98ab906439155cfc6f9afb",
                "status": "NOT_STARTED",
                "date": "2020-10-27T23:21:52.683Z",
                "callInvitees": [
                    {
                        "username": "user1"
                    },
                    {
                        "username": "user2"
                    }
                ]
            },
            {
                "_id": "5f98aba0789e163e0c78908f",
                "status": "NOT_STARTED",
                "date": "2020-10-27T23:22:08.048Z",
                "callInvitees": [
                    {
                        "username": "user1"
                    }
                ]
            }
        ]
    ],
    "messages": [],
    "notifications": []
}

我想要"video": [ { ... }, { ... } ]而我有"video": [[ { ... }, { ... } ]]

我该如何解决这个问题？

标签： javascriptarraysjson

Answer 1

您可以按如下方式使用扩展运算符：

let result = [
    {
        "_id": "5f98ab906439155cfc6f9afb",
        "status": "NOT_STARTED",
        "date": "2020-10-27T23:21:52.683Z",
        "callInvitees": [
            {
                "username": "user1"
            },
            {
                "username": "user2"
            }
        ]
    },
    {
        "_id": "5f98aba0789e163e0c78908f",
        "status": "NOT_STARTED",
        "date": "2020-10-27T23:22:08.048Z",
        "callInvitees": [
            {
                "username": "user1"
            }
        ]
    }
]

let dashboardJSON = { "video": [], "messages": [], "notifications": [] };

dashboardJSON.video.push(...result)

console.log(dashboardJSON);