create a new array from the keys of an Array's Object

Question

I have a array of objects, and by using the foreach or map I want to create new array from its keys:

[{
    "name": "Dentist Specialist",
    "category": "Roles",
    "path": "cde"
},
{
    "name": "Root Canal Therapy",
    "category": "Procedures",
    "path": "abc"
},
{
    "name": "Live Course",
    "category": "Course Type",
    "path": "mfg"
}]

From the above array I need a new ARRAY which will look like this:

[{
    "Roles": "Dentist Specialist"
},
{
    "Procedures": "Root Canal Therapy"
},
{
    "Course Type": "Live Course"
}]

Just replace the 2nd key with the first key and remove the rest.

You're making an array of new objects with keys made from the values of one property and values from another. The title sounds like you just want Object.keys(arr). — Heretic Monkey
– Heretic Monkey, Commented Oct 8, 2021 at 12:20

DecPK · Accepted Answer · 2021-10-08 12:17:33Z

4

You can use map here to achieve the desired result.

arr.map(({ category, name }) => ({ [category]: name }));

or

arr.map((o) => ({ [o.category]: o.name }));

const arr = [
  {
    name: "Dentist Specialist",
    category: "Roles",
    path: "cde",
  },
  {
    name: "Root Canal Therapy",
    category: "Procedures",
    path: "abc",
  },
  {
    name: "Live Course",
    category: "Course Type",
    path: "mfg",
  },
];

const result = arr.map((o) => ({ [o.category]: o.name }));
console.log(result);

answered Oct 8, 2021 at 12:17

DecPK

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