JSFiddle - React, Tailwind, and code Playground

JavaScript

var user = {
	name: "Vasya",
  family: "Pupkin"
}

Object.defineProperty(user, "fullName", {
	get: function(){
  	return this.name + " " + this.family
  }
})

var arr = user.fullName.split('');


alert("У значений в объекте user " +arr.length + " символов, включая пробелы")