ShadowRoot: clonable property

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The clonable read-only property of the ShadowRoot interface returns true if the shadow root is clonable, and false otherwise.

When the value is true, a shadow host cloned with Node.cloneNode() or Document.importNode() will include a copy of the shadow root.

By default the value is false. It can be set to true using the clonable option of the Element.attachShadow() method or by setting the shadowrootclonable attribute of the <template> element that is being used to declaratively attach a shadow root.

Value

true if the shadow root is clonable, and false otherwise.

Examples

const host = document.createElement("div");
const shadowRoot = host.attachShadow({
  mode: "open",
  clonable: true,
});

shadowRoot.clonable;
// true

Specifications

Specification
DOM # dom-shadowroot-clonable

Browser compatibility

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This page was last modified on Apr 10, 2025 by MDN contributors.

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