Group object key values to a new object with same structure (javascript)

June 2, 2022

could you help me? I have this JSON and I need to group in a new object by key:

[
    {
        "product": "name 1",
        "price": "3000",
        "inspection": false,
    },
    {
        "product": "name 2",
        "price": "1000",
        "inspection": true,
    },
    {
        "product": "name 3",
        "price": "5000",
        "inspection": false,
    },
]

Expected Final Result:

    {
        "product": ["name 1","name 2","name 3"],
        "price": ["3000","1000","5000"],
        "inspection": [false,true,false]
    }

I tried to use -> for, foreach <- but not getting a good/optimum result… would you mind helping me, please? (was thinking about reduce, but I didn’t make it work)

>Solution :

let data = [
    {
        "product": "name 1",
        "price": "3000",
        "inspection": false,
    },
    {
        "product": "name 2",
        "price": "1000",
        "inspection": true,
    },
    {
        "product": "name 3",
        "price": "5000",
        "inspection": false,
    },
];

let output = Object.fromEntries(
  Object.keys(data[0]).map(k => 
    [k, data.map(d => d[k])]
  )
);

console.log(output);