[Fixed] JavaScript Convert Array Of Objects to Arrays For only Specific Key

Issue

I have an array of objects

{
    "tags": [{
            "id": "1",
            "data": [{
                    "bs": 1617779042313,
                    "bstp": 1617779099999,
                    "maxA": 1617779050311,
                    "maxV": 10,
                    "minA": 1617779050310,
                    "minV": 10,
                    "q": 3
                },
                {
                    "bs": 1617779100000,
                    "bstp": 1617779519999,
                    "maxA": 1617779100236,
                    "maxV": 10,
                    "minA": 1617779100231,
                    "minV": 10,
                    "q": 2
                }
            ]
        },
        {
            "id": "2",
            "data": [{
                    "bs": 1617779042313,
                    "bstp": 1617779099999,
                    "maxA": 1617779050311,
                    "maxV": 10,
                    "minA": 1617779050310,
                    "minV": 10,
                    "q": 3
                },
                {
                    "bs": 1617779100000,
                    "bstp": 1617779519999,
                    "maxA": 1617779100236,
                    "maxV": 10,
                    "minA": 1617779100231,
                    "minV": 10,
                    "q": 2
                }
            ]
        }

    ]
}

Output

{
    "tags": [{
            "id": "1",
            "data": [
                [1617779050311, 10, 3],
                [1617779100236, 10, 2]
            ]
        },
        {
            "id": "2",
            "data": [
                [1617779050311, 10, 3],
                [1617779100236, 10, 2]
            ]
        }

    ]
}

I want to format this array of objects into array of arrays

for the "data" key i need to get the value of specific keys and insert in array

specific keys – [MaxA, maxV, q]

How can I do it? Any small help appreciated..:)

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Solution

You can use map. See the code snippet below:

const data = [
  {
    bs: 1617779042313,
    bstp: 1617779099999,
    maxA: 1617779050311,
    maxV: 10,
    minA: 1617779050310,
    minV: 10,
    q: 3,
  },
  {
    bs: 1617779100000,
    bstp: 1617779519999,
    maxA: 1617779100236,
    maxV: 10,
    minA: 1617779100231,
    minV: 10,
    q: 2,
  },
];

const keys = ["maxA", "maxV", "q"];

console.log(data.map((d) => keys.map((k) => d[k])));