Variation swatches causing JS errors

Hello, I am in chat with another WOO support. They are saying that the variation swatches plugin is causing JS errors. They wanted to me get in contact with you.

For reference:

Request #9227762

Happiness Engineer (Woo)

Feb 24, 2025, 22:44 UTC

Hi Cory,
Many thanks for the access details which I have confirmed and saved securely.
In checking the site I can confirm the JS errors that my colleague mentioned are still happening and may indeed be the cause of the other issues.
The plugin throwing the errors is indeed Variation Swatches for WooCommerce - Pro: by Emran Ahmed – 2.1.
Did you approach the plugin devs for input as suggested previously?
This is the link in case you haven’t at this point: https://getwooplugins.com/tickets/

Hi Cory,

Thanks for reaching out to us.

You seem to be experiencing the issue due to a conflict of multiple jQuery versions.

On your site, additional jQuery is being added – https://paste.pics/acf8a02f0427bf4f7c8beab69ec2446e

WordPress Core already offers jQuery by default so, you don’t need to enqueue it again from a CDN.

Here is a default list of JS libraries that WP offers:
https://developer.wordpress.org/reference/functions/wp_enqueue_script/#default-scripts-and-js-libraries-included-and-registered-by-wordpress

You can enqueue the built-in jQuery library like this:
wp_enqueue_script( 'jquery' );

Rather than:
wp_register_script( 'jquery', 'https://code.jquery.com/jquery-3.4.1.js');

Our plugin uses the built-in jQuery library of WordPress. Please remove the additional CDN for jQuery.

This should resolve the issue.

Hope to hear from you soon.

Thanks a lot

Variation swatches causing JS errors

Cory FInkelstein

Hakik Zaman