http-equiv attribute for meta (HTML5)

Sets an HTTP response header for the value in the content attribute.

Values

cache-control | content-language | content-type | date | expires | last-modified | location | page-enter | page-exit | pics-label | pragma | set-cookie | site-enter | site-exit | window-target | x-ua-compatible (Default Value: no default value)

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Examples having uses of html attribute 'http-equiv'

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HTML Expires

Use the meta tag to make the cache for your web page expire. If you are looking for a way to stop Google from caching your site, the Meta Expires tag will not do this for you. To stop Google to caching your site use following meta tag: <meta http-equiv="cache-control" content="no-cache">
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HTML Refresh

Above shows refreshing webgrid's home page every 30 seconds. A quick refresh may be necessary for news, stocks, or any other time-sensitive information.