https://www.rajamsr.com/javascript-loop-over-object/

const person = {

name: "John",

age: 30,

favoriteColors: ["Red", "Green"]

};

const keys = Object.keys(person);

// Output: ["name", "age", "favoriteColors"]

// 1. Using a for() loop

for (let i = 0; i < keys.length; i++) {

console.log(keys[i]);

}

// Output: "name", "age", "favoriteColors"