How to: Enable Web Components in Firefox (Shadow DOM)

Web components, sometimes mixed up with the Shadow DOM, are now available in Firefox v29+ under this flag – but they won’t be available to the average end-user.

How to Enable:#

Screenshot from 2015-01-17 09:34:31

  1. In your address bar, go to: about:config
  2. Search for the property: dom.webcomponents.enabled and mark it as true.
  3. If your already on a development page, remember to reload it.

Further Reading#