获取参数对象本身的所有属性的键名数组

index.js

const instance = {
  name: "lilei",
  age: 13,
};

Object.defineProperty(instance, "gender", {
  value: 1,
  enumerable: false,
});

Object.getOwnPropertyNames(instance); // [ 'name', 'age', 'gender' ]
Object.keys(instance); // [ 'name', 'age' ]