Element.openOrClosedShadowRoot

Element.openOrCloseShadowRoot 是一个只读属性。represents the shadow root hosted by the element, regardless if its mode is open or closed. Use Element.attachShadow() to add a shadow root to an existing element.

var shadowroot = element.shadowRoot;

A ShadowRoot object instance, regardless if its mode is set to open or closed, or null if no shadow root is present. (See Element.attachShadow() for further details).

This property is not part of any specification.

• Element.shadowRoot