WooCommerce is among the most widely used plugins in WordPress to enable eCommerce on a site. Since WooCommerce has filters, actions, and hooks, that means making site changes using code snippets is easy.
Code snippets can easily be added on any connected child site using the MainWP Code Snippets extension.
For example, if you do not have Add to Cart redirect enabled, the Continue Shopping link will redirect the customer back to the product that was added when clicked. In most cases, this does not make sense. You can use this code snippet, which will set the Continue Shopping link to redirect back to the site’s shop page.
If the site is having issues with email being sent out, delayed, or if the checkout is slow, this code snippet will disable deferred transactional emails, enabling WooCommerce emails to be sent out when they happen, and not from a Cron event that is batched out. The change to send emails out on a delayed Cron event was added in version 3.0 of WooCommerce. The delay on emails being sent from WooCommerce is around 10 seconds.
WooCommerce will check that each SKU being used is unique. If an SKU is trying to be used on another product, it will show the SKU is not unique. The unique SKU check-in WooCommerce can be disabled using this code snippet.
If you needed to hide the uncategorized category from the shop page on the front-end of the site, another useful code snippet you can use is this code snippet.