Meta-detailed interpretation

Meta is the META tag of HTML, which includes the corresponding HTML information, which is processed by the client browser and Chen Xujing's on the server.

Http-equive is similar to the HTTP header protocol, which responds to some important information in the browser to help correct and accurately display the content of the Web page.

Content (contents) The format of this page of text, Web mode.

CharSet (Code)-this page encoding utf-8 Chinese encoding, This is the content of the page encoding, not the file itself. other Chinese encodings may be garbled.

http-equive attribute syntax format for meta Tags: <meta http-equive= "parameter" content= "Variable Value"/>

The http-equive parameter has the following parameters;

1,content-type (display character set)

<meta http-equive= "Content-type" content= ""/>------Settings page uses a character set

2, Cache-control (head field)

<meta http-equive= "Cache-control" content= "No-cache"/>-------Clear Cache (access to this site needs to be downloaded again)

Cache-control: Refers to the caching mechanism that requests and responses follow, cannot be shared cache processing, allows the server to describe part of a user's response, and this response message is not valid for other user responses.

Cache directives include: No-cache, No-store, Max-age, Max-stale, Min-fresh, only-if-cached

3, Expires content=0

<meta http-equive= "Expires" content= "0"/>----------set page expiry time

4, pragma content=no-cahce

<meta http-equive= "Pragme" content= "No-cache"/>-------is used to prevent the browser from accessing the contents of the Web page in the cache of the local machine, but it cannot be recalled from the cache once it has left the page.

5. Refresh content=2

<meta http-equive= "Refresh" content= "2"/>------automatically refreshes and points to the new page.

6, Cache-control Content=store

<meta http-equive= "Cache-control" content= "store"/>--------Force the presence of any copy in any case.

7, Pics-label

<meta http-equive= "Pics-label" content= ""/>--------Web page equals evaluation

8, Keywords (keywords)

<meta http-equive= "keywords" content= ","/>---------keyword, search engine use.

Meta-detailed interpretation