An event in JavaScript is a technical term used within JavaScript coding. It refers to occurrences that take place in a system. For instance, you may have common HTML events in HTML elements. There are multiple types of events, such as mouse events, keyboard events, user interface events, and form events. JavaScript events are gatherings that take place either online or at a specific location. There are JavaScript events, conferences, and meetups. They all involve different organized events and activities such as keynote speakers, workshops, and round-table discussions.