Static method Object.entries()

The Object.entries() static method returns an
array of a given object’s own enumerable
string-keyed property key-value pairs.

const object1 = {
  a: 'somestring',
  b: 42
};

for (const [key, value] of Object.entries(object1)) {
  console.log(`${key}: ${value}`);
}

// Expected output:
// "a: somestring"
// "b: 42"