[1, 2, 3, 4, 5]

let numbers = [10, 20, 30]
numbers

let mixed = [1, "hello", true, 3.14]
mixed

{ name: "Alice", age: 30 }

let person = { name: "Bob", age: 25, city: "New York" }
person

let empty_list = []
empty_list

let empty_obj = {}
empty_obj

[1, 2, 3] + [4, 5, 6]

let nested = { users: [{ name: "Alice" }, { name: "Bob" }] }
nested