CustomElementRegistry: getName() method

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

Syntax

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

class MyParagraph extends HTMLElement {
  constructor() {
    const template = document.getElementById("custom-paragraph");
    super() // returns element this scope
      .attachShadow({ mode: "open" }) // sets AND returns this.shadowRoot
      .append(document.importNode(template.content, true));
  }
}

customElements.define("my-paragraph", MyParagraph);

// Return a reference to the my-paragraph constructor
customElements.getName(MyParagraph) === "my-paragraph";

Specifications

Browser compatibility