Detailed explanation of examples of html Meta

Meta is used to simulate the response header message of the HTTP protocol in HTML documents. The meta tag is 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), to facilitate search engine robots to find and classify (purpose 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

1. is used to describe the generation tool (such as Microsoft FrontPage 4.0), etc.;

2. Explain the keywords of your webpage to search engines;

3.Tell search engines the main content of your site;

4.Tell search engines the author of your site;

5.

The attributes are described as follows:

Set to all: files will be retrieved and links on the page can be queried;

Set to none: the file will not be retrieved, and the links on the page cannot be queried;

Set to index: the file will be retrieved;

Set to follow: links on the page can be queried;

Set to noindex: the file 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

1.

and Used to describe the text and language used to create the homepage;

Another example is the English character set ISO-8859-1, as well as BIG5, utf-8, shift-Jis, Euc, Koi8-2 and other character sets;

2.Timing allows the web page to jump to the page yourlink within the specified time n;

3. can be used to set the expiration time of a 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;

4. is used to set the browser to prevent the browser from accessing the page content from the cache of the local machine. After setting, once you leave the web page, it cannot be retrieved from the cache;

5.cookie settings, if the webpage expires, the saved cookies will be deleted. It should be noted that the GMT time format must be used;

6.Web page rating, there is a content setting in IE's internet options, which can prevent browsing some restricted websites, and the restriction level of the website is set through the meta attribute;

7.Force the page to be displayed as an independent page in the current window, which can prevent your own web page from being called as a frame page by others;

8.andSet special effects when entering and leaving the page. This function is "Format/Webpage 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 :).              

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