CustomElementRegistry: getName() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The getName() method of the CustomElementRegistry interface returns the name for a previously-defined custom element.

Syntax

js
getName(constructor)

Parameters

constructor

Constructor for the custom element.

Return value

The name for the previously defined custom element, or null if there is no custom element defined with the constructor.

Examples

js
class MyParagraph extends HTMLElement {
  constructor() {
    let templateContent = document.getElementById("custom-paragraph").content;
    super() // returns element this scope
      .attachShadow({ mode: "open" }) // sets AND returns this.shadowRoot
      .append(templateContent.cloneNode(true));
  }
}
customElements.define("my-paragraph", MyParagraph);
// Return a reference to the my-paragraph constructor
customElements.getName(MyParagraph) === "my-paragraph";

Specifications

Specification
HTML
# dom-customelementregistry-getname

Browser compatibility