HTML meat function_CSS/HTML

Meta tags are used in

and of web pages. Meta tags have many uses. There are two attributes of meta: name and http-equiv. The name attribute is mainly used to describe web pages, corresponding to content (web page content), so that search engine robots can find and classify them (at present, almost all search engines use online robots to automatically find meta values ​​to classify web pages). The most important of these are description (description of the site on search engines) and keywords (classification keywords), so a meta value should be added to each page. The more commonly used ones are the following:
name attribute
Used to describe generation tools (such as Microsoft FrontPage 4.0), etc.;
Tell search engines the keywords of your web page;
Tell search engines the main content of your site;
Tell search engines who created your site;

The attributes are described as follows:
is set to all: the file will be retrieved, and the links on the page can be queried;
is set to none: the file will not be retrieved, and the links on the page cannot be queried. Query;
set to index: the document will be retrieved;
set to follow: the links on the page can be queried;
set to noindex: the document will not be retrieved, but the links on the page Can be queried;
Set to nofollow: the file will not be retrieved, but the links on the page can be queried.
http-equiv attribute


It is used to describe the text and language used in making the homepage; for example, English is the ISO-8859-1 character set, as well as BIG5, utf-8, shift-Jis, Euc, and Koi8 -2 and other character sets;
Timing allows the web page to jump to the page http:// within the specified time n. yourlink;
can be used to set the expiration time of the web page. Once it expires, it must be called again on the server . It should be noted that the GMT time format must be used;
is used to set the browser to prevent the browser from accessing the page content from the cache of the local machine. Once you leave the webpage after setting, you cannot recall it from the Cache;
cookie setting, if When the web page expires, the saved cookies will be deleted.It should be noted that the GMT time format must be used;
Web page rating, there is a content setting in IE’s internet options, which can prevent some browsing restrictions website, and the restriction level of the website is set through the meta attribute;
Forcing the page to be displayed as an independent page in the current window can prevent yourself from The webpage is called as a frame page by others;
and Set special effects when entering and leaving the page. This function is the "format/web page transition" in FrontPage, but the added page cannot be a frame page.
The above are several commonly used meta attributes. Friends who have personal homepages may wish to add them to your homepage. The effect will be different :).