let userStr = '{"name":"Sammy","email":"sammy@example.com","plan":"Pro"}';
let userObj = JSON.parse(userStr);
console.log(userObj);
let userObj = {
name: "Sammy",
email: "sammy@example.com",
plan: "Pro"
};
let userStr = JSON.stringify(userObj);
console.log(userStr);