Create object with list of keys

Question

What is the concisest way to create an object from a list of keys, all set to the same value. For example,

const keys = [1, 2, 3, 4]
const value = 0

What is the tersest way to attain the object

{
  “1”: 0,
  “2”: 0,
  “3”: 0,
  “4”: 0
}

Answer 1

You can use Object.fromEntries

const keys = [1, 2, 3, 4]
const value = 0

const result = Object.fromEntries(keys.map(k => [k, value]))

console.log(result)