HTMLTemplateElement: shadowRootCustomElementRegistry property
Baseline 2026
Newly available
Since October 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The shadowRootCustomElementRegistry property of the HTMLTemplateElement interface reflects the value of the shadowrootcustomelementregistry attribute of the associated <template> element.
Note:
This property is not useful for developers, and is only documented for completeness.
If a <template> element is used to declaratively create a ShadowRoot, then this object and property do not exist.
Otherwise, if an HTMLTemplateElement is created, the value of this property is irrelevant because the object is not a shadow root and cannot subsequently be changed to a shadow root.
Value
A string that reflects the shadowrootcustomelementregistry attribute of the associated <template> element.
Specifications
| Specification |
|---|
| HTML # dom-template-shadowrootcustomelementregistry |