How to convert value into key & another key into value in JavaScript

Question

This is my array of Object. I want to convert my first value into key & Second value into value only. Please go through question and i have also attached my desired output.

 [
  {
    "name": "Unknown",
    "value": "RAHUL"
  },
  {
    "name": "FirstName",
    "value": "WILLEKE LISELOTTE"
  },
  {
    "name": "LastName",
    "value": "DE BRUIJN"
  }
]

I want my Object as

{
"Unknown": "RAHUL"

},
{
"FirstName": "WILLEKE LISELOTTE"
},
{
"LastName": "DE BRUIJN"
}

`I want my Object as` that's not an object, it's several objects separated by commas — StudioTime, Aug 17 '21 at 16:28

StudioTime · Answer 1 · 2021-08-17T16:36:32.527

0

IF you mean to create a new array, then simply map the original array. You don't need to create a new array and push into it, that's just redundant code:

const testData = [{
    "name": "Unknown",
    "value": "RAHUL"
  },
  {
    "name": "FirstName",
    "value": "WILLEKE LISELOTTE"
  },
  {
    "name": "LastName",
    "value": "DE BRUIJN"
  }
];

const newData = testData.map(nameObject => {
  return {
    [nameObject.name]: nameObject.value
  }
});
console.log(newData);

edited Aug 17 '21 at 16:36

answered Aug 17 '21 at 16:33

StudioTime

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Like in the dupe target – Andreas Aug 17 '21 at 16:35
Thanks - I did look but didn't see that specific Q/A - good find @Andreas – StudioTime Aug 17 '21 at 16:42

score -1 · Answer 2 · answered Aug 17 '21 at 16:23

-1

You just have to use brackets for [value.name] to perform achieve this.

var arr = []

testdata.map((value) => {
    arr.push({ [value.name]: value.value })
})

answered Aug 17 '21 at 16:23

Rahul More

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You asked a question then you answered it yourself? why asking if you already have the answer? – Adil Bimzagh Aug 17 '21 at 16:28
@AdilBimzagh [That's totally valid](https://stackoverflow.com/help/self-answer). Although in this case there are definitely already multiple other questions with the exact same problem. – Andreas Aug 17 '21 at 16:28
This results in an array. OP said he wants an object. – James Aug 17 '21 at 16:32
@James _This_ is the OP o.O – Andreas Aug 17 '21 at 16:32
@Andreas understood. Point still stands. – James Aug 17 '21 at 16:33
If you're not going to use the return value of `.map()` than `.map()` is not the right tool. – Andreas Aug 17 '21 at 16:42

How to convert value into key & another key into value in JavaScript

2 Answers2