The
documentation for Facebook Likes
don't include Reactions yet. We will add it into JFBConnect as soon as it's available, but we will have to wait until it's available on the development side by them. A lot of times, FB can change the underlying Javascript and we'll automatically pick up the new options. If there are new parameters to configure the like buttons, that's when we'll need to change JFBConnect to add these new options in. So we'll keep monitoring them for updates, but for now we wait (unless you've found more up-to-date documentation elsewhere).
-Melissa