Create and Write files in windows 8.1 store apps by JavaScript and WinJS

Question

I am building a app for win 8.1 store and i need to create some files during app execution. how this is possible only by js or WinJS. i found command for writing and reading but not for creating.

Answer 1

You can use:

  folder.createFileAsync(
           fileName, 
           Windows.Storage.CreationCollisionOption.replaceExisting, 
           Windows.Storage.Streams.UnicodeEncoding.utf8
  );

the folder object can be a StorageFolder object, like for example:

 Windows.Storage.ApplicationData.current.localFolder