CustomElementRegistry - Web APIs | MDN (original) (raw)
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The CustomElementRegistry interface provides methods for registering custom elements and querying registered elements. To get an instance of it, use the window.customElements property.
Instance methods
CustomElementRegistry.define()
Defines a new custom element.
Returns the constructor for the named custom element, or undefined if the custom element is not defined.
CustomElementRegistry.getName()
Returns the name for the already-defined custom element, or null if the custom element is not defined.
CustomElementRegistry.upgrade()
Upgrades a custom element directly, even before it is connected to its shadow root.
CustomElementRegistry.whenDefined()
Returns an empty Promise that resolves when a custom element becomes defined with the given name. If such a custom element is already defined, the returned promise is immediately fulfilled.
Examples
Specifications
| Specification |
|---|
| HTML # custom-elements-api |