cache_javascript_headers() WordPress Function
This function is used to cache the headers that are sent with each JavaScript file. This can reduce the amount of time that is needed to download a file, and can improve performance on sites that have a lot of traffic.
cache_javascript_headers() #
Set the headers for caching for 10 days with JavaScript content type.
Source
File: wp-includes/functions.php
function cache_javascript_headers() {
$expiresOffset = 10 * DAY_IN_SECONDS;
header( 'Content-Type: text/javascript; charset=' . get_bloginfo( 'charset' ) );
header( 'Vary: Accept-Encoding' ); // Handle proxies.
header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + $expiresOffset ) . ' GMT' );
}
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Changelog
| Version | Description |
|---|---|
| 2.1.0 | Introduced. |