Using event handlers properly presents one of the biggest challenges for ActionScript users perhaps because most of us haven't given much thought to how things happen around us, and thus how to translate that knowledge into creating interactive environments. Understanding and being mindful of how things and people interact in the real world, however, can go a long way toward helping you re-create such interactions in your Flash movies.
As we introduce you to Flash's many event handlers, we'll examine some of the ways their use can be translated into real-world events. As you review these events, remember what you learned at the beginning of this lesson: In Flash, for every event, there is an action (or reaction).
Later in the lesson we'll discuss event handler methods, which are an extension of the standard event handlers.