将对象数组中每个对象的键放入数组: Javascript

// 假设有一个对象数组
const objArray = [
  { name: 'Alice', age: 25 },
  { city: 'New York', country: 'USA' },
  { job: 'Developer', experience: 5 }
];

// 使用map和Object.keys来获取所有对象的键
const keysArray = objArray.map(obj => Object.keys(obj));

console.log(keysArray);

[
  ['name', 'age'],
  ['city', 'country'],
  ['job', 'experience']
]

const allKeysArray = objArray.flatMap(obj => Object.keys(obj));

console.log(allKeysArray);

['name', 'age', 'city', 'country', 'job', 'experience']