Chrome now supports the standardized
browser.* namespace (available from Chrome 148). We are gradually updating the documentation. Read more in our
transition guide.
browser.dom
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Description
Use the chrome.dom API to access special DOM APIs for Extensions
Availability
Chrome 88+
browser.* since Chrome 148
Methods
openOrClosedShadowRoot()
browser.dom.openOrClosedShadowRoot(
element: HTMLElement,
): object
Gets the open shadow root or the closed shadow root hosted by the specified element. If the element doesn't attach the shadow root, it will return null.
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Last updated 2026-10-29 UTC.
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