JavaScript 개체 속성을 어떻게 열거하고 필터링합니까?

const myObject = {
  name: 'Alice',
  age: 25,
  occupation: 'Software Engineer'
};

for (const propertyName in myObject) {
  console.log(propertyName); // Prints: name, age, occupation
  console.log(myObject[propertyName]); // Prints: Alice, 25, Software Engineer
}

for (const propertyName in myObject) {
  if (myObject.hasOwnProperty(propertyName)) {
    console.log(propertyName); // Prints: name, age, occupation
    console.log(myObject[propertyName]); // Prints: Alice, 25, Software Engineer
  }
}