Deeply nested object from array [duplicate]

Question

How would you create a deeply nested object from an array. Like so...

const a = ['a', 'b', 'c', 'd'];

to...

{
  a: {
    b: {
      c: {
        d: {}
      }
    }
  }
}

and potentially as deep as there are elements in the array..

Pranav C Balan · Accepted Answer · 2017-03-09 04:27:22Z

2

const a = ['a', 'b', 'c', 'd'];

let res = {};

a.reduce((obj, e) => obj[e] = {}, res)

console.log(res)

const a = ['a', 'b', 'c', 'd'];

let res = a.reduceRight((obj, e) => ({ [e]: obj }), {})

console.log(res)

answered Mar 9, 2017 at 4:27

Pranav C Balan

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2 Comments

How did you answer after I closed the question?

That's pretty cool returning the assignment in the first snippet :)