You can achieve this functionality by using hidden tags with the content, then switching out their visibility.

您可以通过对内容使用隐藏的标签，然后关闭其可见性来实现此功能。

youdao

Trying to trick a search engine by including hidden fields, or overloading it with meta tags with particular keywords, causes the search engine to ignore the page and the site.

如果在页面中使用隐藏字段，或使用带有特殊关键词的元标记重载页面，搜索引擎将忽略该页面及其站点。

youdao

NET page has 2 parts, one is the page which is displayed on the browser which has HTML tags, hidden values in form of viewstate and data on the HTML inputs.

任何ASP.NET页面有2个部分，一个是显示在浏览器上的页面，它有HTML标记、viewstate形式的隐藏值、HTML inputs上的数据。

youdao