Internet Explorer 8 Optimized

Internet Explorer 9 Public Beta is scheduled to release in August 2010. This new version of IE9 packs lots of new features .
The main features & improvements of ie8 are -

JavaScript engine
Chakra – the java script engine in IE9 is very much improved . It moves rendering of graphical rendering to the hardware using Direct2D and DirectWrite APIs .
This JavaScript engine has a separate background thread for compiling JavaScript. which can take advantage of modern multi-core computers.
In preliminary testing ,with SunSpider benchmarks, ie9 outperforms the IE8 engine by a factor 10 and IE9 also outperforms the newest Firefox JavaScript engine.

Ecmascript
The Chakra JavaScript engine in IE9 significantly improves 
support for ECMA-262: ECMAScript Language 
Specification standard, 

DOM improvements 

* DOM Traversal and Range
* Full DOM L2 and L3 events
* getComputedStyle from DOM Style
* DOMContentLoaded

CSS improvements 
* CSS3 Rounded corners
* CSS3 Values and Units
* CSS3 Multiple backgrounds
* CSS3 Media Queries

HTML5 Audio and Video
IE9 includes support for the HTML5 video and audio tags. IE9 support the
MP3 and AAC codecs natively for audio and support the H.264/AVC for 
video . It also supports WebM video format separately.

IE9 HTML5 canvas tag
HTML5 canvas script support in IE9 will use the Direct2D graphics API to manipulate and render the canvas elements.

HTML5 Inline SVG support
The first IE9 Platform Preview has support for the following 
* Methods of embedding: inline HTML, inline XHTML, <object>, full .svg documents
* Structure: <svg>, <defs>, <use>, <g>, <image>
* Shapes: <circle>, <ellipse>, <rect>, <line>, <polyline>, <polygon>, <path>
* Text
* Filling, Stroking, (CSS3) Color
* DOML2 Core and SVGDOM
* Events
* Presentation Attributes and CSS Styling
* Transform definitions[18]: translate, skewX, skewY, scale, rotate

The final build of IE9 will also support
* Methods of embedding: embed, iframe, img, css image, .svgz
* Gradients and Patterns
* Clipping, Masking, and Compositing
* Cursor, Marker
* Remainder of Text, Transforms, Events

Webfonts (WOFF)
Support webfonts through @fontface this support is extended to include WOFF webfonts.

Other improvements
* Caching
* Web timing Specification
* Developer tools

User agent string
The new user agent string on Windows Vista is:
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0)
The new user agent string on Windows 7 is:
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)

ie9 beta download

Tags: explorer 9, ie 9, ie9, internet explorer 9, windows ie9

This entry was posted on Tuesday, July 27th, 2010 at 5:26 am and is filed under Uncategorized, ie9. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.