Download Internet Explorer 10 (IE10) Platform Preview 4 (PP4) for Windows 8 – Even More Support for HTML5 Technologies

Last Updated on Tuesday, 29 November 2011 01:50 Written by admin Tuesday, 29 November 2011 01:45

Yes, Internet Explorer 10 also supports Windows 7, but the last two platform previews can only be tested on Windows Developer Preview.


Speaking of which, testers can now download a new Platform Preview, the fourth, of Internet Explorer 10 for Windows 8. IE10 PP3 was included into Windows 8 Developer Preview. Click here to download IE10 PP4 for Windows 8.


An updated platform preview of IE10 for the     Windows Developer Preview is now available for         download. This IE10 preview adds even more support for HTML5 technologies,    enabling richer Web applications with significantly improved performance. IE10’s    hardware acceleration of technologies like SVG, CSS3 transforms and animations delivers    faster rendering than other browsers, as highlighted in this short video.

See some of the new HTML5 capabilities, performance improvements in IE10.

With this fourth Platform Preview, developers can start    working with more site-ready HTML5 technologies. You can read the full list         here in the IE10 developer guide. Here are a few highlights:

  • Cross-Origin Resource Sharing (CORS) for safe use of XMLHttpRequest across domains.
  • File API Writer support for blobBuilder allowing manipulation of large binary objects        in script in the browser.
  • Support for JavaScript typed arrays for efficient storage and manipulation of typed        data.
  • CSS user-select property to control how end-users select elements in a Web page        or application.
  • Support for HTML5 video text captioning, including time-code, placement, and captioning        file formats.

These foundational capabilities are what developers building native applications    depend on: working with binary data and files, controlling selection and hit testing    in application UI, and providing accessible video content with captioning. The features    in this platform preview are available to Web pages now, and will be available to    Metro style applications in Windows 8.

Building HTML5 Applications

This IE10 preview supports CORS (cross    origin resource sharing) to allow developers to use XMLHttpRequest to safely    request, share, and move data across applications on different domains. This is    a common pattern developers use to bring data and services together from different    applications. In this        test drive demo, you can see how CORS is used along with XMLHttpRequest,    the File API, and HTML5 progress control to deliver a smooth experience for uploading    multiple files to a service on another domain.

Screen shot of IE Test Drive demo Cross-Site Update showing four image files being uploaded in response to a file drop on an HTML5 target element.

Click here to see    CORS used with XMLHttpRequest to upload files across domains.

Having the ability to work with binary data and files enables developers to build    new kinds of applications and experiences on the Web. This IE10 preview supports    blobBuilder from File API: Writer    for working with large binary objects (blobs) and JavaScript typed arrays. In this test drive demo,    you can see how different file types, including file types which are not natively    supported in the browser like PCX files can be read, rendered, and even have their    internal contents displayed.

Screen shot of IE Test Drive demo Binary File Inspector showing a hex dump of a PCX file and a rendering of that file using HTML5 canvas and JavaScript.

Click here to    see how JavaScript typed arrays used with File APIs to read and view binary files.

As developers build more sophisticated applications on the Web, they have more need    for precise control over how end-users select parts of the page. With CSS user select    support in IE10, developers can specify which elements in their page can be selected    by the consumer when using their applications. In this         this test drive demo, you can see how selection control is applied in a    sample blog application using the user-select property in a CSS rule.

Screen shot of IE Test Drive demo User-Select showing the markup needed to restrict text selection to a portion of the Web page.

Click here to    try CSS user-select to control end-user Web page selection.

Improving Same Markup for HTML5

We continue to contribute to the     test suites under development at the HTML5 standards bodies, submitting         118 new tests to them, to further the goal of interoperability and same    markup. You can view them at the IE Test Center as well. We strongly encourage all    developers to write for HTML5 standards first by always using the HTML5 doc type    <!DOCTYPE html> in your pages.

IE10 Preview 4 introduces an updated     quirks mode that is more consistent and interoperable with the way quirks modes    works in other browsers like Firefox, Chrome, Safari, and Opera. This updated quirks    mode supports quirks for page layout, while allowing use of more up-to-date standards    features like HTML5 elements for audio, video, canvas, and more.

You can find a full list of new functionality available to developers in the IE10    developer guide here.    Download the Windows 8 developer preview    to try this update to IE10. We look forward to continued engagement with the developer    community and your feedback on Connect.

Rob Mauceri, Group Program Manager, Internet Explorer