IE9 preview version with Ja vaScript meta new features evaluation report
From Microsoft released in 95 to now has a first edition IE 15 years, ever since the browser wars IE after a great victory, has been leading in the browser market, however, from 2006 began a new generation of Firefox, Safari and Chrome browser and launched, Microsoft also in 2007 2008 releasing IE7 IE8, to make up for its competitors before compared to the W3C standards and the lack of ECMAScript support (and of course more of security and user experience improvement), but is far not only such, as the W3C organization the upcoming release of meta CSS3 and technical standards, and 3 C appeared on the market in recent years the iPad, iPhone, 3 G and other new conceptual RIA, in WEB APP applications, the browser wars are still far not over.
In march this year in the MIX conference Microsoft released new IE9 browser, is the latest version of the technical details of preview IE9 except include strengthening label management, the mouse control, the GPU hardware acceleration and the function, but also the meta CSS3 and key support, and a new Ja vaScript engine (Chakra) in the execution efficiency give rivals some in the dust.
Because we get is platform preview version, so this version of the IE9 only a simple line of menu bar, but be worth what carry is in the menu bar provides a powerful Debug function, including IE5, IE6 and IE7, IE8, IE9 Document Mode and Developer tools, IETester compared to the front developers very useful:
In the first of the default can see some default Speed Demos, meta Demos, Graphics Demos and ACID3 test options, but these are not the key test today, want to see the real IE9 engine effect, we chose to use meta element and Ja vaScript write Cloth Simulation and CanvasMol application to do the test object.
IE9 Platform Preview to Ja vaScript support
Test data show that IE9 Ja vaScript ECMAScript fifth version of the standard support in the best of the browser, a IE8 but also more obvious improvement.
Test data show that IE9 SunSpider test for the 705.40 ms, then run + Ja vaScript real list of the situation is how? See the right operation of real column screenshots. At present IE9 preview version because most function is not stable, actual loading efficiency can't test.
Windwos task manager show to run Cloth Simulation real fathers take up CPU: 23 memory: 43328 K
CanvasMol real listed the actual operation: in IE9 under the rotation of the graphic Platform Preview effect smooth operation rules movement, efficiency for: 21 atoms 21 bonds 11.0 FPS, only the only fly in the ointment was the block drag is not very good effect support, I believe in the official version will be improved.