Web - Component

About

A Web Component is HTML Custom Element that is optionally:

• created in Shadow DOM (to scope the DOM)
• using a HTML Templates

This is a technology that permits to package up styling and functionality into new, custom HTML tags that can be easily reused or shared with others.

This is used in the github website.

Library

• Polymer Demo (Used by github)

SEO

Just check what Googlebot see

Documentation / Reference

• https://developer.mozilla.org/en-US/docs/Web/Web_Components
• wiki/Web_Components