javascript 使用getter和setter来控制对象的访问

Posted 2021-05-03

class Book {
  constructor(author) {
    this._author = author;
  }
  // getter
  get writer() {
    return this._author;
  }
  // setter
  set writer(updatedAuthor) {
    this._author = updatedAuthor;
  }
}

const lol = new Book('Anonymous');
console.log(lol.writer);  // Anonymous
lol.writer = 'wut';
console.log(lol.writer);  // wut