What values can a constructor return to avoid returning this?

Question

What are the exact circumstances for which a return statement in Javascript can return a value other than this when a constructor is invoked using

Answer 1

Trying to put a few points in simpler words.

In javascript, when you use a new keyword on a function and if,

1. function does not return anything, it will return an intended object

function User() {
  this.name = 'Virat'
}

var user = new User();
console.log(user.name); //=> 'Virat'

2. function returns any truthy complex object [object, array, function etc], that complex object takes priority and user variable will hold the returned complex object

function User() {
  this.name = 'Virat';
  return function(){};
}

var user = new User();
console.log(user.name); //=> undefined
console.log(user); //=> function

3. function returns any literal, constructor takes priority and it will return an intended object

function User() {
  this.name = 'Virat';
  return 10;
}

var user = new User();
console.log(user.name); //=> 'Virat'