输出是什么？

const handler = {
  set: () => console.log("Added a new property!"),
  get: () => console.log("Accessed a property!")
};

const person = new Proxy({}, handler);

person.name = "Lydia";
person.name;

• A: Added a new property!
• B: Accessed a property!
• C: Added a new property! Accessed a property!
• D: Nothing gets logged

参考

• Proxy (opens new window)