javascript how to get key of object in a loop code example

Example 1: how to get value and key in a for of loop in js

const test = {a: 1, b: 2, c: 3};

for (const [key, value] of Object.entries(test)) {
  console.log(key, value);
}

Example 2: loop key in object

const fruits = { apple: 28, orange: 17 }

for(key in fruits){
	console.log(key)
}