Archive for October, 2008

On Oct 09 2008, microsoft launched a brand new robotics challenge in the official web site robochamps.

It’s sponsored by KIA Motors, which is a great company producing cars.

Participants can have the opportunity to choose from 1 of 5 robot cars based on real KIA models in the virtual environment. Anyone who participates in the challenge is required to program those cars to navigate a course through a large city. And there are some devices being equipped with the cars,such as cameras, laser ranger finder, contact sensors and a GPS unit.

The prizes of this challenge is really attractive. The first place winner will bring home a real car produced by KIA which has the approximate retail value of US$15,000. The detail information for this challenge can be fount at this link.

The XMLHttpRequest object should be very famous in the world of developers who are developing ajax applications, which is at the core of of today’s most exciting web applications. Client browsers who are hosting those web applications have a cross domain scripting restriction, which prevents the browser from communicating with any domain other than the domain that serves the browser page.

 Most of the web applications will consume the resources only within one domain, but what if it comes to the situation that the application need to consume the resources from multiple domains, such as calling a 3rd party web service to retrieve some data? Given the restrictions imposed by web browsers on network connections across domains, the solution for the above problem will be really tricky. So let me explain in detail the four ways of getting around the cross browser issues:

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