# `CustomElementRegistry`

The CustomElementRegistry interface provides methods for registering custom elements and querying registered elements.

[Read More on MDN](https://developer.mozilla.org/en-US/docs/Web/API/CustomElementRegistry)

## The CustomElementRegistry Interface

WHATWG
  - https://html.spec.whatwg.org/multipage/custom-elements.html#custom-elements-api

HTML Element Constructors
  - https://html.spec.whatwg.org/multipage/dom.html#html-element-constructors

## The Custom Elements Spec
// W3C - https://w3c.github.io/webcomponents/spec/custom/
// WHATWG - https://html.spec.whatwg.org/multipage/custom-elements.html
//
// Legacy webcomponentsjs
//   - https://github.com/webcomponents/custom-elements/blob/master/src/CustomElementRegistry.js
//
//   - CEReactions
//     - https://github.com/webcomponents/custom-elements/pull/62
//     - https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions
//     - https://html.spec.whatwg.org/#cereactions



# `CustomElementRegistry`

The CustomElementRegistry interface provides methods for registering custom elements and querying registered elements.

[Read More on MDN](https://developer.mozilla.org/en-US/docs/Web/API/CustomElementRegistry)


## The CustomElementRegistry Interface

WHATWG
  - https://html.spec.whatwg.org/multipage/custom-elements.html#custom-elements-api

HTML Element Constructors
  - https://html.spec.whatwg.org/multipage/dom.html#html-element-constructors


## The Custom Elements Spec

W3C
  - https://w3c.github.io/webcomponents/spec/custom/

WHATWG
  - https://html.spec.whatwg.org/multipage/custom-elements.html


## `CustomElementRegistry.define`
  Definition Steps
    - https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-name#element-definition

// Legacy webcomponentsjs
//   - https://github.com/webcomponents/custom-elements/blob/master/src/CustomElementRegistry.js
//
//   - CEReactions
//     - https://github.com/webcomponents/custom-elements/pull/62
//     - https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions
//     - https://html.spec.whatwg.org/#cereactions



Update with link for CustomElement Registry
Update with link for CustomElement Registry
