woocommerce seckill plugin for a limited time

Wordpress+woocommerce is a mall, some people want to do a limited-time spike, limited, limited time. Made a plug-in, the effect is as follows

Plugin Name: Finale Lite – Sales Countdown Timer & Discount for WooCommerce

Plug-in search and install enable

After activation, open Campaigns under Woocommerce and add Add New Campaign

then set it

Set spike time

Set discount method

Set sales quantity

set styles etc.