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Prop Meta Httpequiv

📅 2026-06-13 | 📂 JavaScript
HTML DOM Meta httpEquiv Property\n\n

HTML DOM Meta httpEquiv Property

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Image 1: Meta Object Reference Manual Meta Object

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Definition and Usage

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The httpEquiv property can set or return the HTTP header information in the content attribute.

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The http-equiv attribute can be used to simulate HTTP response header information.

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The value of the http-equiv attribute depends on the value of the content attribute.

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Note: If the name attribute is set, the http-equiv attribute does not need to be set.

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Syntax

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Set the httpEquiv property:

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linkObject.httpEquiv="_HTTP-header_"
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Return the httpEquiv property:

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linkObject.httpEquiv
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Some commonly used _HTTP-header_ values:

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ValueDescription
cache-controlControl the document's caching mechanism. Allowed values: * public - all content will be cached (client and proxy servers can cache) * private - content is cached only in private cache (only client can cache, proxy servers cannot) * no-cache - do not cache * no-store - do not cache when not archived Example: <meta http-equiv="cache-control" content="no-cache">
content-languageLanguage of the response body Example: <meta http-equiv="content-language" content="en-US">
content-typeReturns the MIME type of the content Tip: Usually used for character set setting. Example: <meta http-equiv="content-type" content="text/html; charset=UTF-8">
dateTime when the origin server sent the message Example: <meta http-equiv="date" content="Wed, 16 Feb 2011 22:34:13 GMT">
expiresDate and time when the response expires Example: <meta http-equiv="expires" content="Fri, 30 Dec 2011 12:00:00 GMT">
last-modifiedLast modified time of the requested resource Example: <meta http-equiv="last-modified" content="Mon, 03 Jan 2011 17:45:57 GMT">
locationUsed to redirect the recipient to a non-requested URL location to fulfill the request or identify a new resource Example: <meta http-equiv="location" content="URL=">
refreshDefines how often the page is refreshed Example: <meta http-equiv="refresh" content="300">
set-cookieCreates a cookie, including cookie name, cookie value, expiration time. Example: <meta http-equiv="set-cookie" content="sitecookie=myContent;expires=Fri, 30 Dec 2015 12:00:00 GMT; path=">
window-targetSpecifies the name of the frame to be loaded
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Browser Support

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Internet Explorer Firefox Opera Google Chrome Safari

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All major browsers support the httpEquiv property

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Examples

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Example

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Display HTTP header information:

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<!DOCTYPE html>\n\n<html>\n\n<head>\n\n<meta charset="utf-8">\n\n<title>()</title>\n\n<meta http-equiv="content-type" content="text/html;charset=utf-8">\n\n<script>\n\n function displayResult(){ \n\nvar x=document.getElementsByTagName("meta").httpEquiv; \n\nalert(x); \n\n }\n\n</script>\n\n</head>\n\n<body>\n\n<button type="button" onclick="displayResult()">Display HTTP-Equiv</button>\n\n</body>\n\n</html>
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Try it yourself »

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Image 7: Meta Object Reference Manual Meta Object

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