HTML http-equiv attribute
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
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
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