let arr = ['Hello', 'Hi', 'How', 'do', 'you']
let x = arr;
let y = [...arr]
console.log(x) //Array ["Hello", "Hi", "How", "do", "you"]
console.log(y) //Array ["Hello", "Hi", "How", "do", "you"]
console.log(x === y) //false
console.log(arr === x) //true
console.log(arr === y) //false