Convert JavaScript string in dot notation into an object reference

Question

Given a JS object

var obj = { a: { b: \'1\', c: \'2\' } }

and a string

\"a.b\"

how can I convert the stri

Answer 1

I used this code in my project

const getValue = (obj, arrPath) => (
  arrPath.reduce((x, y) => {
    if (y in x) return x[y]
    return {}
  }, obj)
)

Usage:

const obj = { id: { user: { local: 104 } } }
const path = [ 'id', 'user', 'local' ]
getValue(obj, path) // return 104