Migrating a Windows Phone 7 Silverlight app to a Metro style app using JavaScript can be either a straightforward effort or a difficult one, depending on the type of app. If you are porting a simple UI app—a utility or lightweight game—JavaScript can be an effective destination platform for Windows Developer Preview ports from Windows Phone 7, using well-known, standard web-development technologies. If you are porting an app with significant UI components or a graphics-rich environment, you should consider a Metro style app using C++, C#, or Visual Basic and XAML.

 

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