طرق الكائن

const person = {
    name: "John",
    age: 30,
    city: "New York"
};

const keys = Object.keys(person);
// ["name", "age", "city"]

const values = Object.values(person);
// ["John", 30, "New York"]

const entries = Object.entries(person);
// [["name", "John"], ["age", 30], ["city", "New York"]]

Object.keys(person).length