1.js

var name = "Francis";
var lastname = "Jones"
var age = 23;
var obj
function createObject(name,lastname,age){
   obj = {
       name:name,
       lastname:lastname,
       age:age,
   }
   return obj;
}
console.log(createObject(name,lastname,age))

const name = "Francis";
const lastname = "Jones";
const age = 23;

function createObject({ name, lastname, age }) {
  return {
    name,
    lastname,
    age,
  };
}

const person = { name, lastname, age };

createObject(person);