attachShadow
Abrir Shadow DOM e injetar markup + CSS.
const root = this.attachShadow({ mode: 'open' });
root.innerHTML = `<style>:host{display:block}</style><slot></slot>`;
mode: 'open' expõe element.shadowRoot.
Abrir Shadow DOM e injetar markup + CSS.
const root = this.attachShadow({ mode: 'open' });
root.innerHTML = `<style>:host{display:block}</style><slot></slot>`;
mode: 'open' expõe element.shadowRoot.