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Windows News
Microsoft Releases Second IE10 Platform Preview
Posted on Jun 30 2011 11:53 AM by xper in Software

IE10 Platform Preview 2, the same HTML5 engine seen in the recent public “Windows 8” demos, is now available for download. With this update, IE10 continues to deliver support for site-ready HTML5 technologies as well as improving performance.

With the second Platform Preview, developers can start working with several site-ready HTML5 technologies for building beautiful, interactive Web applications with great performance and security. You can read the full list here in the IE10 developer guide:

  • Beautiful and interactive Web applications are easier to deliver with support for several new technologies like CSS3 Positioned Floats, HTML5 Drag-drop, File Reader API, Media Query Listeners and initial support for HTML5 Forms.
  • HTML5 Application performance improves across the board, as well as the ability to deliver better performance with more efficient use of battery life with new technologies like Web Workers with Channel Messaging, Async script support, and others.
  • Web application security improves using the same markup with support for HTML5 Sandbox for iframe isolation.

IE10 continues IE9’s precedent of enabling Web applications to do more in the browser without plug-ins. It also continues the pattern of offloading work to the parts of a PC that are best suited for them, like the GPU for graphics, and different processor cores for background compilation of JavaScript.

Beautiful and Interactive Web Applications

Beautiful and interactive Web applications are easier to deliver with IE10’s support of HTML5 technologies. For example, IE10 supports CSS3 Positioned Floats to enable text flows around figures on a page, building on the first Platform Preview’s support for CSS3 grid, multi-column, and flexbox:

Attached Image: 20110629-srhsippafd-image1.png

Beauty starts with reliable, consistent parsing behavior. This IE10 Platform Preview includes parsing improvements from the W3C HTML5 spec, reflecting that developers can now expect the same behavior in all compliant browsers even for imperfect or invalid markup. HTML5 is the first version of HTML to define the behavior of invalid markup.

Rather than relying on “fix-up” rules that vary from browser to browser, HTML5 parsing behavior is now specified in a way that developers can count on it. IE10 now supports the File Reader API and HTML5 Forms validation, as well as advanced hit testing for more complex selection scenarios like graphics editors, games, and other applications that typically use multiple graphics layers.

This test drive illustrates how different browsers today give different results when running the same Web pages even though they all claim support for the same standards. The quality and correctness of different browsers’ HTML5 engines vary widely. To fulfill the goal of interoperability and same markup, thetest suites under development at standards bodies continue to grow in importance for the Web developer community.

This test drive also illustrates the performance differences between different implementations of hardware acceleration.

Download: Second IE10 Platform Preview
More @ IE Blog









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