Answers for "javascript destructuring sub object"

object destructuring example

const hero = {
  name: 'Batman',
  realName: 'Bruce Wayne',
  address: {
    city: 'Gotham'
  }
};

// Object destructuring:
const { realName, address: { city } } = hero;
city; // => 'Gotham'

Destructuring in ES6

var a = obj.a
var b = obj.b
var c = obj.c