How to realize whether the web page is retrieved by html

This article mainly shows you "html how to achieve web page retrieval", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "html how to achieve web page retrieval" this article.

Whether the web page is retrieved

Some of the attribute values are as follows:

Property value is "all": the file will be retrieved and the links on the page can be queried

Property value is "none": the file is not retrieved and links on the page are not queried

Property value is "index": the file will be retrieved

Property value is "follow": links on the query page

Property value is "noindex": the file is not retrieved, but can be queried and linked

Property value is "nofollow": the file is not retrieved, but links on the page can be queried.

The above is all the contents of the article "how to realize whether the web page is retrieved by html". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!