Filter values from array

Question

I try to filter values from the next:

const data = [
    {
        car: 'audi',
        age: 2,
        power: 200
    },
    {
        car: 'bmw',
        age: 32,
        power: 100
    },
    {
        car: 'mercedes',
        age: 21,
        power: 150
    },
];

const getRes = (data, keyTxt) => {

    return data.map(i => {
        return {
            [keyTxt]: (
                Object.entries(i).filter(j => !'car'.includes(j))
            )
        }
    })
};
console.log(getRes(data, 'age'));

I try to check if word car exists in Object.entries(), and if it exists to delete all arrays which include the word and to get something like this:

  {
    "age": [
     
      [
        "age",
        2
      ],
      [
        "power",
        200
      ]
    ]
  },
  {
    "age": [
     
      [
        "age",
        32
      ],
      [
        "power",
        100
      ]
    ]
  },
  {
    "age": [
     
      [
        "age",
        21
      ],
      [
        "power",
        150
      ]
    ]
  }

What is wrong with my code and why the filter does no work? How to make this code to be able to get what i described above?

j.includes('car'). although it should really be j[0]!=='car' — user120242
– user120242, Commented Jun 17, 2020 at 6:20

ABGR · Accepted Answer · 2020-06-17 06:27:56Z

1

Just a slight correction in .includes

const data = [
    {
        car: 'audi',
        age: 2,
        power: 200
    },
    {
        car: 'bmw',
        age: 32,
        power: 100
    },
    {
        car: 'mercedes',
        age: 21,
        power: 150
    },
];

const getRes = (data, keyTxt) => {

    return data.map(i => {
        return {
            [keyTxt]: (
                Object.entries(i).filter(j => !j.includes('car'))
            )
        }
    })
};
console.log(getRes(data, 'age'));

answered Jun 17, 2020 at 6:27

ABGR

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Comments

Karl L · Accepted Answer · 2020-06-17 06:26:32Z

0

Should be something like this:

  Object.entries(i).filter(j => !j.includes('car'))

answered Jun 17, 2020 at 6:26

Karl L

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Comments

Pengling Wu · Accepted Answer · 2020-06-17 06:30:28Z

0

You have to either destructure the entries or reference them by index.

const getRes = (data, keyTxt) => {
  return data.map((entry) => {
    return {
      [keyTxt]: Object.entries(entry).filter(([key]) => key != 'car')
    };
  });
};

answered Jun 17, 2020 at 6:30

Pengling Wu

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Comments

Ilijanovic · Accepted Answer · 2020-06-17 06:40:01Z

0

You could use .map() and use delete to delete the property you dont need. Then return an Object with with your dynamic key name and Object.entries() as its value

const data = [
    {
        car: 'audi',
        age: 2,
        power: 200
    },
    {
        car: 'bmw',
        age: 32,
        power: 100
    },
    {
        car: 'mercedes',
        age: 21,
        power: 150
    },
];


let result = (data, txt) => {
   return data.map(el => {
      delete el.car;
      return {
         [txt]: Object.entries(el)
      };
   })
}


console.log(result(data, "age"));

edited Jun 17, 2020 at 6:40

answered Jun 17, 2020 at 6:30

Ilijanovic

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