javascript - Using Array.map with new Array constructor

Question

I was trying to use new Array() constructor with map in order to create a one-line code that creates a list of elements. Something like this :

let arr = new Array(12).map( (el, i) => {
  console.log('This is never called');
  return i + 1;
});

Answer 1

You can use Array#from to create an array having passed length.

Array.from({length: 12}, (e, i) => i + 1);