Declarative Shadow DOM

A declarative API to allow the creation of #shadowroot's using only HTML and no Javascript. Sign up for an Origin Trial (M85-M88) here: Blog post:


This API allows Web Components that use Shadow DOM to also make use of Server-Side Rendering (SSR), to get rendered content onscreen quickly without requiring Javascript for shadow root attachment.



Status in Chromium


Origin trial (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • N/A
  • No signal
  • N/A
  • Positive


Intent to Prototype url

Intent to Prototype thread

Search tags

Shadow DOM, Declarative,

Last updated on 2020-10-02