ex.js

// const veggies = ["onion", "garlic", "potato"];
// veggies.forEach(
// function (veggie, index) {
// console.log(`${index}. ${veggie}`);
// }
// );

const result = [];
const drone = {
 speed: 100,
 color: "yellow",
};
const droneKeys = Object.keys(drone);

droneKeys.forEach(
 function (key) {
 result.push(key, drone[key]);
 }
);
console.log(result);