const first = ["two", "three", "four"];
const second = [ "six", "seven", "eight"];
const combined = ["one", ...first, "five", ...second]
console.log(combined); // ["one", "two", "three", "four", "five", "six", "seven", "eight"]

const user = {
 name: 'David',
 age: 30,
 address: 'NY'
};

const { name, age, address } = user;
console.log(Hi, I'm ${name} with age ${age} and living in ${address});

const days = ["sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday"];
const [firstDay, secondDay] = days;
console.log(firstDay); // sunday
console.log(secondDay); // monday