This feature adds facebook reactions buttons below/above the comment. It makes it easier for the reader to interact with you. The buttons are simply counters to how often they were clicked. It is a new handy feature for Facebook that allows people to express many more feelings on each comment than just “Like” button.
Great User Experience
We used the UX design of Facebook to let users have more and more great experience on both Desktop and Mobile.
This feature allows you to easily display the reactions button and the reaction count above or below the comment content according to your taste in the Like/Dislike Settings.