HTML5新特性有哪些？
•用于绘画的 canvas 元素
•用于媒介回放的 video 和 audio 元素
•对本地离线存储的更好的支持
•新的特殊内容元素，比如 article、footer、header、nav、section
•新的表单控件，比如 calendar、date、time、email、url、search
HTML5可以被视为一个应用开发平台。它提供了对于音频、视频、互动图片更好的支持，比如支持flash，Silverlight等等。
What is the difference between the application model of HTML and HTML5?
Trick question, there is no difference. HTML5 is a continuum of HTML and just a souped up version of the original HTML. There has been no major paradigm shift.
Ok, what’s the real difference between HTML and HTML5?
There are many.9 From a broader perspective, HTML was a simple language for laying out text and images on a webpage, whereas HTML5 can be viewed as an application development platform that does what HTML does that and more, including better support for audio, video, and interactive graphics. It has a number of new elements, supports offline data storage for applications, and has more robust exchange protocols. Thus, proprietary plug-in technologies like Adobe Flash, Microsoft Silverlight, Apache Pivot, and Sun JavaFX are no longer needed, because browsers can now process these elements without additional requirements.