wp-includes/functions.php:1564Sets the HTTP headers for caching for 10 days with JavaScript content type.
function cache_javascript_headers() { $expires_offset = 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() + $expires_offset ) . ' GMT' );}Introduced in 2.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.