Summary of the use of html meta tags (recommended)

GB2312 means that the website uses simplified Chinese characters.

When ISO-8859-1 is used, it means that the encoding used by the website is English;

UTF-8 represents the universal language encoding;

PS: The approach for HTML5 pages is to directly use <meta charset="utf-8"/>

< meta http-equiv ="X-UA-Compatible" content ="IE=7" >

In the above code, IE=edge tells IE to use the latest engine to render web pages, and chrome=1 activates Chrome Frame.

PS: Google added a plug-in: Google Chrome Frame (Google Embedded Browser Framework GCF). This plug-in can keep the user's IE browser unchanged, but when the user browses the web, he actually uses the Google Chrome browser kernel, and supports multiple versions of IE browsers such as IE6, 7, and 8.

PS: The time format must be GMT

PS: 2 means the page will stay for 2 seconds and then jump to the following URL

PS: The time format must be GMT.

Public: Indicates that the response can be cached by any cache.

Private: Indicates that the entire or partial response message is for a single user and cannot be processed by a shared cache. This allows the server to describe only part of the response message to the current user, without having this response message be valid for other users' requests.

no-cache: Indicates that the request or response message cannot be cached.

no-store: Used to prevent important information from being accidentally released. Sending it in a request message will cause both the request and response messages to not use the cache.

max-age: Indicates that the client can receive responses with an age no greater than the specified time (in seconds).

min-fresh: Indicates that the client can receive responses whose response time is less than the current time plus the specified time.

max-stale: Indicates that the client can receive response messages beyond the timeout period. If you specify a max-stale message value, the client can receive response messages that exceed the specified timeout period.

PS: 360 browser support

Value: all|none|index|noindex|follow|nofollow, default is all

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

none: The file will not be retrieved and the links on the page cannot be queried;

index: the file will be retrieved;

follow: The links on the page can be queried;

noindex: The file will not be indexed, but the links on the page can be queried;

nofollow: The file will not be retrieved, but the links on the page can be queried.