In the world of JavaScript, event handling is a fundamental concept that allows us to respond to user interactions with our web applications. One powerful technique in event handling is the combination of event bubbling and capturing.
In this article, we’ll explore how to leverage these mechanisms to create more robust and dynamic event-driven applications.
Understanding Event Bubbling and Capturing
Event bubbling and capturing are two different ways in which events propagate through the DOM (Document Object Model) tree.
Event Bubbling: When an event occurs on an element, it first triggers the event handler on that element, then it “bubbles up” through the parent elements, triggering their event handlers as well, until it reaches the top of the DOM tree (usually the document object).
Event Capturing: In contrast, event capturing starts at the top of the DOM tree and works its way down to the target element, triggering event handlers along the way.
By understanding and combining these two event propagation mechanisms, you can create more flexible and powerful event handling strategies.
