Applying a visual effect to a region of a content item responsive to detecting a user action in conjunction with presenting the content item at a client device

摘要

An online system receives information from a content-providing user of the online system defining a content format of a content item associated with the content-providing user. The content format describes a user action detectable at a client device at which the content item is being presented, a visual effect, and a region of the content item to which the visual effect is to be applied in response to detecting the user action at the client device in conjunction with presenting the content item. The online system sends the content item for display to a viewing user of the online system via a client device associated with the viewing user. Responsive to detecting the user action by one or more sensors associated with the client device while the content item is being presented at the client device, the online system applies the visual effect to the region of the content item.