JS取回JSON解析是修改对象

我在fetch中遇到过这种奇怪的行为。

首先看看这个长度(这是正确的)和实际结构的截图:

考虑以下来自服务器的json响应，其中likes数组显然包含一个对象，而comments数组包含两个对象:

{
    "status":"success",
    "payload":{
        "272699880986":{
            "likes":[
                {
                    "createdTime":"2016-11-07T04:41:21.000Z",
                    "senderId":10209615042475034,
                    "senderName":"Alfredo Re",
                    "likes":1
                }
            ],
            "comments":[
                {
                    "createdTime":"2016-11-07T04:41:54.000Z",
                    "senderId":1021426764639564,
                    "senderName":"Alfredo J. Re",
                    "comments":1
                },
                {
                    "createdTime":"2016-11-07T04:41:24.000Z",
                    "senderId":10209615042475034,
                    "senderName":"Alfredo Re",
                    "comments":1
                }
            ]
        }
    }
}

现在，将响应传递给整个response.json()，像这样:

fetch('http://example.com/entries.json', {
    method: 'GET',
    headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json',
        ...authKeys,
    }
})
.then(response => {
    switch(response.status){
        case 200:
            console.log('status 200', response)
            return response.json()
    }
})
.then(json => {
    console.log('parsed response')
    console.log(json)
})

得到以下结果:

{
    "status":"success",
    "payload":{
        "272699880986":{
            "likes":[
                {
                    "createdTime":"2016-11-07T04:41:54.000Z",
                    "senderId":1021426764639564,
                    "senderName":"Alfredo J. Re",
                    "likes": 1,
                    "comments":1
                },
                {
                    "createdTime":"2016-11-07T04:41:24.000Z",
                    "senderId":10209615042475034,
                    "senderName":"Alfredo Re",
                    "comments":1
                }
            ],
            "comments":[
                {
                    "createdTime":"2016-11-07T04:41:54.000Z",
                    "senderId":1021426764639564,
                    "senderName":"Alfredo J. Re",
                    "comments":1
                },
                {
                    "createdTime":"2016-11-07T04:41:24.000Z",
                    "senderId":10209615042475034,
                    "senderName":"Alfredo Re",
                    "comments":1
                }
            ]
        }
    }
}

看看它是如何混淆likes和comments集合的。我现在都快疯了。我错过什么了吗?

这是一个gif显示chrome的控制台列表显示数组包含一个对象，另一个包含两个对象。当我单击前者时，它会变成一个包含两个对象的数组!这让我很困惑