Cloning Object

Option - 1 Using for-in

const personCopy = {};
for(let key in person) {
    personCopy[key] = person[key];
}
console.log(personCopy);

Option - 2 Using Object.assign

const personCopy = Object.assign({}, person);
console.log(personCopy);        

Option - 3 Using spread operator

const personCopy = {...person};
console.log(personCopy);