如何使用构造器来打印出每本书的主题、颜色和页面？

class Book {
  constructor(title, color, pages) {
    this.title = title;
    this.color = color;
    this.pages = pages;
  }

  printInfo() {
    console.log("书籍主题：" + this.title);
    console.log("书籍颜色：" + this.color);
    console.log("书籍页面：" + this.pages);
  }
}

// 创建书籍对象并打印信息
const book1 = new Book("JavaScript高级编程", "红色", 500);
book1.printInfo();

const book2 = new Book("Python入门指南", "蓝色", 300);
book2.printInfo();