One neat thing about HTML5 is the ability to store data locally, and a common use for that is creating a high score board for your game. The following is how I recently deployed this. This code is working in my WinRT app however it could be done in a pure HTML5 app running for PC desktop by simply swapping out the file read and write portions. I broke down the process into 5 steps
Architecture Support for Windows 8 Application Modes
With the introduction of Windows 8* and touch-enabled computers, like Intel Ultrabook™ devices, where touch is an additional input method, users have new ways of interacting with applications and software. Historically while touch has been limited to niche devices requiring specialized software, today we’re seeing a lot of manufacturers creating devices supporting these new input methods.
If you are an app developer and want to learn about what is required for Windows 8 Desktop and Windows Store apps, this article, “Ultrabook Feature Compatibility Matrix for Windows 8* Development,” will help guide you in the right path.
Si eres un desarrollador de aplicaciones y quieres aprender sobre los requisitos de las aplicaciones de Windows 8 Desktop y de Windows Store, este artículo "Matriz de compatibilidad de función de Ultrabook para el desarrollo de Windows 8," te guiará en el camino correcto.