Chromium Blog
News and developments from the open source browser project
Chrome 33 Beta: Custom Elements, Web Speech, and more
2014年1月16日木曜日
Today’s Chrome
Beta
channel release kicks off the new year with a slew of new features for developers ranging from Custom Elements, to web speech synthesis and improved WebFont downloading. Unless otherwise noted, changes apply to desktop versions of Chrome and Chrome for Android.
Custom Elements
With
Custom Elements
, web developers can define new types of HTML elements to use in their web applications. The spec is one of several new API primitives landing under the
Web Components
umbrella. It brings abstraction and modularity to the web platform by allowing developers to:
Define new HTML/DOM elements
Create elements that extend from other elements
Logically bundle together custom functionality into a single tag
Extend the API of existing DOM elements
Custom Elements allows developers to architect their apps in much cleaner ways. For example, here's what the markup for
a demo chat app written with Custom Elements
looks like:
Web Speech API - Synthesis
The
Web Speech API
enables web developers to add
speech recognition
and synthesis to their web pages. We added the recognition part
last year
, and today’s release is the first to include
speech synthesis
. For example, your dictations could be
synthesized
to play back in a different language.
NPAPI deprecation update
As described in the original NPAPI deprecation
announcement
, Chrome has begun blocking webpage-instantiated NPAPI plug-ins by default on the Stable channel. Mac and Windows NPAPI support will be completely phased out by the end of the year, and on Linux Chromium will
no longer support NPAPI plug-ins
starting as early as April.
Other web platform changes in this release
The
requestAutocomplete API
for easy web payments is now available on Mac.
The
Page Visibility API
has been
unprefixed
.
WebFont downloading has
been optimized
so that fonts (at the median) are available before Blink layout is done, meaning that the net latency impact of using a webfont is usually zero.
The Blink CSS Animations and Transitions implementations are now powered by the new
Web Animations model
. This change should not affect developers or sites;
let us know
if it does.
Chrome now supports the latest version of the
Web Notification API
. We'll be deprecating support for the
legacy API
down the road, so please update your websites if they're using it.
Google Chrome Frame has been retired. Please read our June 2013 Chromium
blog post
for additional details and background.
Visit
chromestatus.com
for a complete overview of Chrome’s developer features.
Chrome Dev Summit recap
In late November we also held the
Chrome Dev Summit
, a two-day, single-track conference with over 300 web developers and Chrome engineers. The talks—which were recorded and livestreamed—covered a range of topics including
Polymer
,
new media APIs in Chrome for Android
,
Mobile DevTools
, and a
ton
of
performance
tips
. Check out the
full list
of recorded talks, including the
keynote
and
Q&A panel
.
Circle
+Google Chrome Developers
for more updates!
Posted by
<software-engineer title="Element Customizer">Dominic Cooney</software-engineer>
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