Convert array of strings into an object with those string as properties and null values

Question

Let's say I have this:

const myArr = ["NAME_A","NAME_B","NAME_C"];

And I'd like to convert it to:

const myObj = {
  NAME_A: null,
  NAME_B: null,
  NAME_C: null,
}

I can do it by initializing an empty object and adding properties by iterating the array with forEach or something, but I believe there is a more efficient solution out there.

Does this answer your question? [Convert array to object keys](https://stackoverflow.com/questions/54789406/convert-array-to-object-keys) — Aris, Feb 18 '21 at 16:48
one loop using each index value of the array as a key for the new object seems to work *shrugs* — The Bomb Squad, Feb 18 '21 at 17:50

score 0 · Answer 1 · answered Feb 18 '21 at 17:49

//I just used the indexes in the array as keys in the object *shrugs*
function arrToObj(arr){ //converting function
  let obj={}
  for(let i=0;i<arr.length;i++){
    obj[arr[i]]=null
  }
  return obj
}

const myArr = ["NAME_A","NAME_B","NAME_C"];
const myObj=arrToObj(myArr)
console.log(myObj)

score 0 · Answer 2 · answered Feb 18 '21 at 18:01

0

You can use inline queries to entries and create object from this entries like

Object.fromEntries(["NAME_A","NAME_B","NAME_C"].map((x)=>[x, null]))

answered Feb 18 '21 at 18:01

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Convert array of strings into an object with those string as properties and null values

2 Answers2