Bubbling in Shadow DOM

Web Components ⟩ Shadow DOM ⟩ Events ⟩

📗 參考

• JS.info ⟩ Bubbling, event.composedPath()

📘 手冊

👥 相關

• If event occurs on an element from shadow DOM, then, as it bubbles out of shadow DOM, its event.target is reset to <custom-element>.

• For purposes of event bubbling, flattened DOM is used.

• if we have a slotted element, and an event occurs somewhere inside it, then it bubbles up to the <slot> and upwards. 👉 see: tab 1️⃣ (click on slotted element)

event.composedPath()

• The full path to the original event target, with all the shadow elements, can be obtained using event.composedPath() 👉 see: tab 1️⃣

1️⃣

💾 replit (live demo on codepen)

result

Topics

• Events that Cross Shadow DOM Boundary