What is the difference between event delegation and direct listeners?

What is the difference between event delegation and direct listeners?

Event delegation is a technique where a single event listener is added to a parent element to manage events for multiple child elements. In contrast, direct listeners are added to each individual child element.

Can you give me an example of event delegation?

Sure! If you have a list of items, instead of adding a click listener to each item, you can add one listener to the parent <ul> element. This way, when any item is clicked, the event bubbles up to the parent, and you can handle it there.

What are the advantages of using event delegation?

Event delegation improves performance by reducing the number of event listeners, simplifies code maintenance, and allows for dynamic elements to be handled without needing to reattach listeners.

Are there any downsides to event delegation?

Yes, event delegation can lead to issues with event propagation, and it may not work well for certain events like focus or blur that do not bubble.