doc.js 497 Bytes
/**
 * Book类,代表一个书本.
 * @constructor
 * @param {string} title - 书本的标题.
 * @param {string} author - 书本的作者.
 */
 function Book(title, author) {
  this.title=title;
  this.author=author;
}
Book.prototype={
  /**
   * 获取书本的标题
   * @returns {string|*}
   */
  getTitle:function(){
      return this.title;
  },
  /**
   * 设置书本的页数
   * @param pageNum {number} 页数
   */
  setPageNum:function(pageNum){
      this.pageNum=pageNum;
  }
};