Dynamic views

A <view> element for declarative dynamic content updates

• The <view> has a match attribute with a URL pattern and a name
• When navigating, views with a match attribute that matches the new URL intercept the navigation
• Instead of clearing the page and navigating, the document from the new URL is fetched
• The document in the response is parsed, and content of <template view="..."> elements replaces the current view contents
• The view's original content is the "loading" fallback. visible at start, or when stale (awaiting new content) for N milliseconds.
• The state (stale, ready, error) is reflected in CSS pseudo-classes
• Declarative view transitions (@view-transition { navigation: auto }) are triggered for this kind of transition.