CODEWITHSUNDEEP
javascriptweb-componentshadow-dom
trusktr
trusktr

Reputation: 45484

How to detect when an element no longer has a shadow root without polling?

Is there a way to detect when a shadow root is removed from an element without polling? I would like to know if it is possible to do this in both v0 and v1 APIs. When in v1 API, it should work even if the root is closed.

Upvotes: 2

Views: 540

Answers (2)

Supersharp
Supersharp

Reputation: 31191

The Shadow DOM can't be detached or replaced but its content can be removed.

You can set a MutationObserver on its shadowRoot to detect that:

var target= element.shadowRoot
var observer = new MutationObserver( callback )
observer.observe( target, { subtree: true, childList: true } )

Upvotes: 0

trusktr
trusktr

Reputation: 45484

Apparently (correct me if wrong), once an element has a shadow root, it will always have a shadow root. So, therefore this question is invalid because an element that has a shadow root must continue always having a shadow root.

Upvotes: 1

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