[Help] How to implement the comment reminder on Sina Weibo and Baidu Tieba_html/css_WEB-ITnose

For example, when there are comments or replies, there will be a prompt in the upper right corner of the page. After clicking, it will jump to the corresponding page. Thank you

Reply to the discussion (solution)

This is implemented in the background. . Just write the style. . Just like the principle of determining whether the user is logged in in the backend, you only need to make the style in the frontend. .

The previous js periodically polls through ajax to see if there is any new news, and displays it if there is any.