Web platform features explorer

📃 March 2012 release notes

New in Chrome

The following features are now available in Chrome:

  • Min and max width and height: The min-width, min-height, max-width, and max-height CSS properties set the minimum and maximum size of an element.
  • Sourcemap header: The Sourcemap HTTP response header links generated code to a source map, so the browser shows the original source in a debugger. This makes it easier to work with minified or transpiled code.

New in Firefox

The following features are now available in Firefox:

  • hashchange: The hashchange event fires when the URL fragment identifier (the part of the URL starting with #) of the current page has changed.
  • WebSockets: The WebSocket API opens a two-way communication channel between the user's browser and a server.