Angular & Signals (283 Qs)•Part 2: HttpClient, RxJS Observables & Angular Elements (36 - 62)
How to transfer components to custom elements?
Transforming components to custom elements involves two major steps,
- Build custom element class: Angular provides the
createCustomElement()function for converting an Angular component (along with its dependencies) to a custom element. The conversion process implementsNgElementConstructorinterface, and creates a constructor class which is used to produce a self-bootstrapping instance of Angular component. - Register element class with browser: It uses
customElements.define()JS function, to register the configured constructor and its associated custom-element tag with the browser'sCustomElementRegistry. When the browser encounters the tag for the registered element, it uses the constructor to create a custom-element instance.
The detailed structure would be as follows,

Practical Code Example
typescript
// Transferring Angular Component to Custom Element:
const CustomWidget = createCustomElement(WidgetComponent, { injector });
customElements.define('custom-widget', CustomWidget);