谷歌的I/O会议是搜索巨头每年举办的开发人员大会,今年在旧金山举行。
会议的第一天主题非常明确:网络开发的时代已经到来。当前,我们已经能够利用HTML5创建丰富的基于浏览器的应用。
谷歌的副总裁Vic Gundotra公布了针对HTML5开发的五个关键的元素:画布,视频,地理位置,数据库和应用程序缓存与Web工人。 更详细的参见下面的注释。
- “不要低估了网络。 ” 微软(他曾经工作的地方)认为Web应用程序没有可能跟桌面应用程序竞争。
- “网页赢得了。 ”一个更强大的网络使得所有事情变得更加容易。
- 新的HTML5标准。 有机会做一些与众不同的事情。
- 近15亿人正在使用现代开放源码的浏览器。
- 5个关键元素激发着谷歌:
- 1) 画布 -固有的网络,与JavaScript , CSS和DOM中。 像素级的控制利用网络。
- 画布存在于Chrome, Firefox和Safari ,Opera-让我们特别谈论下IE (笑) 。 微软已经公开声明的HTML5标准,我们热切期待着看到关于它的蛛丝马迹。
- 2) 视频 -视频在浏览器上仍是艰难的,因为这有关插件的问题。 但是现在在HTML5上将有一个新的视频标记。
- Youtube目前的运行完全使用该视频标记-今天只是一个演示,但它在将来是完全可能的,并且不需要flash.
- 3) 地理位置 -所有应用服务可以更好地与地理位置结合。
- Cell ID和WiFi已经解决了关于获取数据的问题。 他们已经绘制了整个世界。
- 再次,除了IE之外的所有浏览器目前都支持这个。
- Gundotra是感谢Mozilla基金会的辛勤工作,使新的标准可能。 另一个山在IE浏览器。
- 4 )数据库和应用程序缓存 -将你需要的信息在本地进行存储从而使得应用程序更快。
- 展示google手机Android上的Gmail-离线运行。
- 5 )网络工人
- JavaScript来做运动检测。 它可以感应什么时候有一个动画并只有在需要时执行。
- Google产品目前拥有超过60个API,每天进入Google的API调用有40亿次。
http://www.techcrunch.com/2009/05/27/live-from-google-io-2009/


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