This article provides a brief review of some performance tests conducted on the new Internet Explorer 10 with the Metro interface. IE10 shows performance improvements, but is still the slowest on 3 out of the 4 graphs presented. The fourth graph, which represents animation capabilities, shows IE plus two other browsers tied for first place followed by Firefox in last place.

Recent changes in Apple’s WebKit incorporate LLInt (Low Level Interpreter), which now makes the JSC (JavaScriptCore) a “triple tier virtual machine.” Performance varies significantly by platform.

This article provides an analysis for the author’s prediction of growth for Internet Explorer and trouble for Chrome.

This article discusses the reasons for Google’s impending redefinition of some basic terminology: “operating system,” “platform,” “kernel,” “browser,” “webapp,” and “website.” The article ends by asking whether this is a good thing.

This “book” explains its author’s vision of what a webapp should be: self-contained, interactive, engaging, rich user interface, similar to native apps, works offline, uses the capabilities of the device it runs on, client-side architectural model, hides traditional navigation techniques. It is presented in enough detail that a newbie would be able to understand.

There is a lot of buzz about this document, so you may want to consider it required reading.

Here are some of this week’s active JavaScript tests/measurements:

• division vs. multiplication by a fraction
• Math.floor() vs. ~~ vs. |0
• jQuery.data vs. jQuery().data
• forEach vs. for
• for vs. while
• prototype vs. instance functions
• === vs. ==
• function n() {} vs. var n = function() {};
• eval vs. adding a script to the DOM