My updated version of MDN's bubbling and capture example. The original comes from MDN's "Introduction to events" tutorial in the "JavaScript building blocks" course.

EventDispatcher A JavaScript event dispatcher which supports bubbling and capture phases, and bubbling up the DOM tree.

1. Event bubbling : There are many times when we want to handle two or more event handlers at different levels in DOM and that is why event bubbling introduced. So, it makes an event to propagate from ...