You can see that when you create the specific fields on WooCommerce Checkout page using ACF for WooCommerce, it will validate the input with JS.
The particular custom fields like numbers, URL or email, they will be validatedÂ with JS, before the other task of WooCommerce run. Here’s the flow:
- ACF render the fields on WooCommerce checkout page
- ACF for WooCommerce validate the custom fields first
- WooCommerce will validate the fields of WooCommerce then.