Instantly share code, notes, and snippets.

What would you like to do?
Only load scripts and styles if a specific shortcode is present in the content when the page/post is saved
* This first function maps shortcodes to their respective resources,
* then checks whether those shortcodes exist in the content,
* then stores the required resource handles in a custom field.
* This way, we aren't running resource-intensive functions on every page load.
function check_post_shortcodes($post_id) {
// Map conditional shortcodes to their respective resource handle
// Remember to manually dequeue resource handles below as well.
$shortcodes_mapper = array(
'vc_row' => 'js_composer_front',
// If this is a revision, get real post ID
if ( $parent_id = wp_is_post_revision( $post_id ) )
$post_id = $parent_id;
// Get the post content
$post = get_post($post_id);
$content = $post->post_content;
// Create an empty array for the required resource handles to be stored in post meta
$required_resources = array();
// For each shortcode handle in the array, search the content to see if it's present.
// If it exists in the content, add it's resource handle to the list of required resources.
foreach ( $shortcodes_mapper as $shortcode_tag => $resource_handle ) {
if ( strstr($content, '[' . $shortcode_tag ) ) {
array_push($required_resources, $resource_handle);
// Only continue if we have any resource handles
if ( $required_resources ) {
// Encode the array to save in post meta
$required_resources = json_encode($required_resources);
// Unhook this function so it doesn't loop infinitely
remove_action( 'save_post', 'check_post_shortcodes' );
// If our custom field already exists, just update it
if ( get_post_meta( $post_id, 'conditional_shortcode', true) ) {
update_post_meta( $post_id, 'conditional_shortcode', $required_resources );
// Otherwise, create it
else {
add_post_meta( $post_id, 'conditional_shortcode', $required_resources );
// NOTE: You may want to change the name of the custom field. Prefixing with an underscore will also hide it from the back end.
// Re-hook this function
add_action( 'save_post', 'check_post_shortcodes' );
// Finally, if our shortcode is not present, but our custom field does, delete the custom field
else {
if ( get_post_meta( $post_id, 'conditional_shortcode', true) ) {
delete_post_meta( $post_id, 'conditional_shortcode' );
// This function only fires when the post is saved. Not on page load.
add_action( 'save_post', 'check_post_shortcodes' );
* This second function dequeues your conditional resources,
* then re-enqueues the ones present in the custom field.
function conditionally_load_shortcode_resources() {
// Remember to manually dequeue your conditional resource handles in case they were already enqueued
wp_dequeue_style( 'js_composer_front' );
// Set up our variables
global $post;
$post_id = $post->ID;
$resource_handles = get_post_meta( $post_id, 'conditional_shortcode', true);
// If our array of handles exists, enqueue each one.
if ( $resource_handles ) {
foreach ( json_decode($resource_handles) as $handle ) {
wp_enqueue_style( $handle );
add_action( 'wp_enqueue_scripts', 'conditionally_load_shortcode_resources', 100 );

This comment has been minimized.

aelsharawi commented May 8, 2017

is there any updates to this, seems not working


This comment has been minimized.

aelsharawi commented May 8, 2017

when pasted into this plugin:

My Custom Functions
by Arthur Gareginyan


This comment has been minimized.


Stegosource commented Aug 3, 2017

Oh hey @aelsharawi, I don't know why I never got an email from your comments.

Anyway, this Gist was mostly for demonstration purposes. You need to configure it a bit to make it work. There is an array on line 11 that needs takes a shortcode ('vc_row') and associates it to a resource handle ('js_composer_front'). There is also a manual resource dequeue on line 81 that would need to be edited.

Sorry it didn't work for you right out of the box. It is more of a proof of concept.

If you need a built out plugin for that, I would recommend Plugin Organizer or WP Asset CleanUp

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment