Sorry, no time right now for that. I'll try to explain more clearly. There's no problem if I can bind directly to the element. However, that's often not possibl

Sorry, no time right now for that. I'll try to explain more clearly. There's no problem if I can bind directly to the element. However, that's often not possible. Imagine a <Carousel> element that is initialized, event listeners and all, but only receives data (<Item> elements) at a later time. In jQuery I can do something like this: $(<Carousel>).on('click', <Item>, function(e) { // using this 'this' gives you the <Item> element. Always. Even // if you click on a child element of <Item>. And it works if // you add or remove items. Also it doesn't add a listener // to *every* single item, which matters if you've got a whole // bunch of them! }); The vanilla equivalent is often presented to be as simple as: <Carousel>.addEventListener('click', function(e) { // e.target is the actual element you clicked. So now we need to // figure out if this element is inside an <Item>, and perhaps // also *which* <Item>. There's various approaches, and it's // not rocket science, but it's all extra work for something that // seems like a common scenario. });