Facebook expands 'Like' button to include new 'Reactions'
To use the new feature, users have to hold down the "Like" button on mobile devices or hover over the button on desktops to see a menu of reaction images.

Facebook on Wednesday announced the worldwide roll-out of its "Reactions" feature, which is an extension of the "Like" button. With this, users will be able to express the following reactions to Facebook posts: "Like", "Love", "Haha", "Wow", "Sad" and "Angry". To use the new feature, users have to hold down the "Like" button on mobile devices or hover over the button on desktops to see a menu of reaction images.
In a blog post, Facebook product manager Sammi Krug said, "We have been testing Reactions in a few markets since last year, and have received positive feedback so far. Today, we’re excited to offer it to everyone who uses Facebook around the world." Reuters reported that a pilot project of the new feature was launched in Ireland and Spain in October.