Observe和ObjectLink 使用

getCommentList(resolve?: (value: string | PromiseLike<string>) => void) {  
  let result: ArticleCommentResult = JSON.parse(this.json);  
  let list: CommentBean[] = result.comment_list;  
  list.forEach(bean => {  
    let commentBean: CommentBean = new CommentBean();  
    commentBean.nickname = bean.nickname  
    commentBean.cuser_id = bean.cuser_id  
    commentBean.star_number = bean.star_number  
    commentBean.is_zan = bean.is_zan  
    commentBean.content = bean.content  
    commentBean.elite = bean.elite  
    commentBean.article_title = bean.article_title  
    this.commentList.push(commentBean)  
  });  
}