I just got a Windows 8 PC and installed Visual Studio 2013 Pro and Visual Studio 2013 Express. Unfortunately I am not able to create Javascript projects to develop apps for
To develop 'JavaScript - Windows Store applications' Visual Studio Express 2012 for Windows 8 and Windows 8 must be installed.
However, if all JavaScript templates are missing try installing the following from the from Microsoft site.
Once these are installed you may be prompted to also install 'Multi-Device Hybrid App Tools' from within Visual Studio when clicking on a JavaScript template.