迭代对象的嵌套数组，查找 id 并更新与 id 匹配的对象

我的输入如下。它是一个对象数组，每个对象都有状态，这也是一个对象数组。我想追加details当状态 id 与状态匹配时，在 states 对象内部id如以下所说的。 IE。82175746

const input = 
[
    {
        "country": { "id": 87745195, "action": "Analyze" },
        "states": [
            { "id": 83589582, "action": "Verify" },
            { "id": 87335656, "action": "Analyze" }
        ]
    },
    {
        "country": { "id": 83861166, "action": "Verify" },
        "states": [
            { "id": 82175746, "action": "Closed" },
            { "id": 78745158, "action": "Closed" }
        ]
    }
]


const details = { "totalOpenRadars": 1, "totalClosedRadars": 1 }

const id = 82175746

这就是我想要达到的结果。请注意，ID 82175746 会与所有州 ID 进行比较。一旦找到匹配项，上述详细信息就会如下所示附加到匹配的对象中。

const result = 
[
    {
        "country": { "id": 87745195, "action": "Analyze" },
        "states": [
            { "id": 83589582, "action": "Verify" },
            { "id": 87335656, "action": "Analyze" }
        ]
    },
    {
        "country": { "id": 83861166, "action": "Verify" },
        "states": [
            { "id": 82175746, "action": "Closed", "details": { "totalOpenRadars": 1, "totalClosedRadars": 1 } },
            { "id": 78745158, "action": "Closed" }
        ]
    }
]

为了实现这一目标，我尝试了这种方法，但无法正确获得结果。 有人可以告诉我哪里出了问题吗

const result  = input.forEach((element) => {
    element.states.forEach((state) => {
        if(state.id === id) {
            state.details = details
        }

    });
});

Array.forEach总是返回undefined, so result一直会undefined。如果你看input操作后，它确实包含您指定的详细信息。

或者，您可以传播input到一个名为的新数组中result并执行你的循环result相反，如果你打算保留input相同。

const input = 
[
    {
        "country": { "id": 87745195, "action": "Analyze" },
        "states": [
            { "id": 83589582, "action": "Verify" },
            { "id": 87335656, "action": "Analyze" }
        ]
    },
    {
        "country": { "id": 83861166, "action": "Verify" },
        "states": [
            { "id": 82175746, "action": "Closed" },
            { "id": 78745158, "action": "Closed" }
        ]
    }
]


const details = { "totalOpenRadars": 1, "totalClosedRadars": 1 }

const id = 82175746

input.forEach((element) => {
    element.states.forEach((state) => {
        if(state.id === id) {
            state.details = details
        }

    });
});
console.log(input);