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The fourth platform of IE10 simplifies building cross-site scenarios that work consistently across browsers by supporting Cross-Origin Resource Sharing (CORS) for XMLHttpRequest (XHR) . CORS for XHR makes sharing data across sites simple and flexible. In the most basic scenario CORS enables creating...

Metro style apps in Windows 8 have all the performance benefits of IE10 when showing Web content. In Metro style apps, Web content is always JIT compiled and hardware-accelerated. Other platforms do not provide the same level of performance in apps. For example, Cocoa apps on iOS offer significantly...

CSS3 features make it easier to build rich and immersive Web experiences. A recent post described how Web developers add personality to their sites with CSS3 Transitions and Animations. CSS3 3D Transforms add another dimension (literally) for developers to enhance their sites. For example,...

The transition to a plug-in free Web is happening today. Any site that uses plug-ins needs to understand what their customers experience when browsing plug-in free. Lots of Web browsing today happens on devices that simply don’t support plug-ins. Even browsers that do support plug-ins offer many...

As Web sites transition more and more into Web applications, working with files in meaningful ways is becoming increasingly important. Starting with Platform Preview 2, IE10 includes support for the File API , enabling developers to read and slice files on the client. Platform Preview 4 adds support...

IndexedDB is a W3C Working Draft that enables JavaScript developers to store, search, and retrieve data on the user's local client, even when Internet connectivity is disabled . This blog post describes IDBExplorer, a tool we use internally to debug IndexedDB applications. IDBExplorer lets you...

Compat Inspector is now available for IE10. Use Compat Inspector to quickly identify if Internet Explorer platform changes affect your site. Whether you're preparing for IE10 or still updating for IE9, run Compat Inspector on any page experiencing problems. Then watch for messages explaining potential...

IE10 Platform Preview 4 includes support for a new CSS property, -ms-user-select , which makes it easier for Web developers to control exactly what text can be selected on their Web sites. If you were to watch me all day at my workstation, you would notice that as I read on the computer, I select...

With cross-browser support for both the CSS3 @font-face rule and the WOFF font packaging format , modern Web typography has expanded far beyond the realm of ‘ Web-safe fonts .’ Well-known magazines such as the New Yorker use Web fonts to preserve the typographic personality of their headlines...

The fourth IE10 platform preview includes enhanced HTML5 support by using an interoperable quirks mode based on the behavior defined in HTML5. This HTML5-based quirks mode is the default quirks mode in IE10. Users and Web developers want sites to just work across browsers. A key part...

Last March, we released a prototype implementation of the audio portion of a working draft of the W3C Media Capture API on HTML5 Labs . This prototype publicized some proposed API enhancements described in section 6.1 of Microsoft’s HTML Speech XG Speech API Proposal . We have now updated the prototype...

Users expect to visit any site on the Internet with any browser and enjoy a similar quality experience. We first discussed Internet Explorer’s commitment to achieving the goal of consistent “same markup, same results” across browsers in a post on March 16, 2010 announcing the release...

With HTML5 comes many APIs that push the envelope on user experiences involving media and real-time communications. These features often rely on binary file formats, like MP3 audio, PNG images, or MP4 video. The use of binary file formats is important to these features to reduce bandwidth requirements...

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...

For the Web and Web applications to keep making progress, the programming language of the Web must continue to improve. Today’s JavaScript standard lacks a few basic objects and library helpers that are vital for building rich, world-wide Web applications. Last week at the Ecma TC39 meeting at Apple...

Advancements like high-performance compiled JavaScript and hardware-accelerated rendering of HTML5 and CSS3 in Internet Explorer 9 and 10 allow Web developers to create richer and richer experiences. Two related features, CSS3 Transitions and CSS3 Animations , give Web developers a declarative way...

Building fast and functional sites is a challenge with which most Web developers are familiar. Loading a new page every time the user clicks a link is slow. Fetching all content dynamically effectively disables the back button. Working with hashes is better, but still not ideal. Internet Explorer 10...

Vendor prefixes enable Web developers to experiment with new standards before they reach the Candidate Recommendation stage. I previously wrote how these prefixes are also a mechanism browser vendors use for handling timing conflicts between implementations and specifications. In building demos of new...

Web graphics in SVG (Scalable Vector Graphics) format offer better quality display over a broader range of device sizes compared to bitmap-based graphics. SVG also has inherent accessibility making it the best choice for interactive graphics and those involving text. SVG usage on the Web continues...

Windows 8 Metro style apps let developers take their Web sites’ experiences to the next level. With Metro style apps, developers can build experiences that are more immersive, beautiful, and better connected with other apps and the rest of Windows. Apps can utilize the Windows Runtime to deliver...

Touch interaction with Web sites and apps has the opportunity to improve their usability and ubiquity as the Web and Windows 8 Metro style apps play a key role on tomorrow’s touch-enabled devices. This post explains how Web developers can use the new IE10 pointer event model along with the iOS touch...

Scalable Vector Graphics (SVG) provides Web developers with a declarative, markup-based language for building rich, interactive content as part of their Web sites. With SVG Filter Effects, supported in IE10 in the Windows Developer Preview, developers have a collection of powerful, image-based effects...

Internet Explorer 10 in the Windows Developer Preview introduces two new CSS features designed to make it easier for developers to create rich text-centric Web pages and apps. CSS3 Regions provides a lightweight mechanism to flow content through multiple non-contiguous areas. IE10’s support of CSS3 Hyphenation...

IE10 in the Windows Developer Preview introduces support for hardware-accelerated CSS3 text-shadow . Text-shadow is one of the top requested features from Web developers. It enables text effects that were previously difficult or impossible to accomplish in a standards-friendly way without resorting...

Users expect their Web sites and apps to work well even when the network isn't available. With data increasingly stored in the cloud, developers want to enable fluid experiences that allow access to data when there is no connectivity; when devices are disconnected from the network or when they...