There are many jQuery plugins that have been transferred into a WordPress one already, but what can you do when it is not the case? How do you do when you have found the perfect jQuery plugin for your latest site, but it is not yet available as a WordPress plugin?
Categories and Post Tags boxes are built-in meta boxes that have been already registered in WordPress. We can use them not only for default posts or pages but also for custom post types as well in WordPress. And this can be done easily with argument taxonomies of register_post_type() function when registering new custom post type.