What is WordPress Hook: style_loader_tag

The style_loader_tag hook is a WordPress action hook that allows developers to modify or add attributes to the HTML link tag for enqueued stylesheets.

Understanding the Hook: style_loader_tag

The style_loader_tag hook is located within the wp-includes/class.wp-styles.php file and is called when the wp_print_styles function is executed. This hook provides a way to modify the HTML output for enqueued stylesheets before they are printed to the page.

Hook Parameters (if applicable): style_loader_tag

The style_loader_tag hook does not accept any parameters.

Hook Doesn’t Work: style_loader_tag

If the style_loader_tag hook doesn’t seem to be working, it could be due to the hook being called after the styles have already been printed to the page. To troubleshoot this issue, ensure that the hook is being added before the wp_print_styles function is called.

Best Practices & Usage Notes (if applicable): style_loader_tag

When using the style_loader_tag hook, it’s important to note that any modifications made to the HTML link tag for stylesheets will apply to all enqueued styles. This means that changes made using this hook will affect all stylesheets on the site, so it’s important to use this hook judiciously.

style_loader_tag Usage Example: style_loader_tag

“`php
function custom_style_loader_tag($html, $handle, $href, $media) {
if ($handle === ‘custom-stylesheet’) {
$html = str_replace(“rel=’stylesheet'”, “rel=’preload’ as=’style'”, $html);
}
return $html;
}
add_filter(‘style_loader_tag’, ‘custom_style_loader_tag’, 10, 4);
“`