什么是 HTML5?

HTML5是HTML最新的修订版本，2014年10月由万维网联盟（W3C）完成标准制定。

HTML5的设计目的是为了在移动设施上支持多媒体。

HTML5 简单易学。

HTML5 是下一代 HTML 标准。

HTML , HTML 4.01的上一个版本诞生于 1999 年。自从那以后，Web 世界已经经历了巨变。

HTML5 仍处于完善之中。然而，大部分现代浏览器已经具有了某些 HTML5 支持。

HTML5 是 W3C 与 WHATWG 合作的结果,WHATWG 指 Web Hypertext Application Technology Working Group。。

WHATWG 致力于 web 表单和应使用程序，而 W3C 专注于 XHTML 2.0。在 2006 年，双方决定进行合作，来创立一个新版本的 HTML。

HTML5 中的少量有趣的新特性：

• 使用于绘画的 canvas 元素

• 使用于媒介回放的 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，比方 article、footer、header、nav、section

• 新的表单控件，比方 calendar、date、time、email、url、search

公告必需位于 HTML5 文档中的第一行,用非常简单

下面是一个简单的HTML5文档：

文档内容......

HTML5 的改进

• 新元素

• 新属性

• 完全支持 CSS3

• Video 和 Audio

• 2D/3D 制图

• 本地存储

• 本地 SQL 数据

• Web 应使用

HTML5 多媒体

用 HTML5 你能简单的在网页中播放 视频(video)与音频 (audio) 。

• HTML5

• HTML5

HTML5 应使用

用 HTML5 你能简单地开发应使用

• 本地数据存储

• 访问本地文件

• 本地 SQL 数据

• 缓存引使用

• Javascript 工作者

• XHTMLHttpRequest 2

HTML5 图形

用 HTML5 你能简单的绘制图形:

• 用 元素。

• 用内联 SVG。

• 用 CSS3 2D 转换、CSS3 3D 转换。

HTML5 用 CSS3

• 新选择器

• 新属性

• 动画

• 2D/3D 转换

• 圆角

• 阴影效果

• 可下载的字体

理解更多CSS3知识请查看本站的 CSS3 教程。

HTML5 表单

新表单元素, 新属性，新输入类型，自动验证。

已移除元素

以下的 HTML 4.01 元素在HTML5中已经被删除:

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