I'm new to web development and recently picked up javascript. Right now, I'm trying to pull a random post from the top-10 posts on this multi-reddit RSS feed of wallpapers. The links in the RSS feed don't always lead directly to an image, but I noticed that if I mouse over the thumbnail of an image, the HoverZoom extension for Chrome is still able to determine the original resolution image that I want to get.
How could I do this using basic javascript commands?