HTML http-equiv attribute

Last update on August 19 2022 21:50:39 (UTC/GMT +8 hours)

http-equiv

The purpose of the HTML http-equiv attribute is to provide information for HTTP response message headers (for example content or application type).

Supported elements

HTML http-equiv attribute supports meta element.

Syntax

<meta http-equiv="value" ... / >

Type of value

Name which must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").

Value

Value	Description
Allow	Specifies the methods supported by the server.
Content-Encoding	Specifies additional content-encoding for the document.
Content-Length	Specifies the size of the document (in bytes).
Content-Type	Specifies the MIME type of the document (like text/html).
Date	Specifies when the document was created.
Expires	Specifies when the document will be considered obsolete.
Last-Modified	Specifies when the document was last modified.
Location	Specifies an absolute URL for the document.
Refresh	Specifies a time interval for the document to refresh itself.
Set-Cookie	Specifies a cookie-value.
WWW-Authenticate	Specifies authentication rules returned by the server.

Default value

There is no default value of HTML http-equiv attribute.

Supported doctypes

HTML 4.01 strict, HTML 4.01 transitional, HTML 4.01 frameset.

Usage of HTML http-equiv attribute

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