WordPress Code: Predictive Link Hover Preloader Plugin

Have you ever visited sites that show link previews before you even click on a link? You can always come up with your own code for this but it could slow your site down if not careful. You will want to preload content that is absolutely necessary and use a smart cache system. This script lets you do just that:

This code only activates on newer browsers. It primes post data in WP cache and becomes faster on subsequent loads. It preloads after hovering 100ms. You can always change that by modifying this part of the code.