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: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, the test 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.
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