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
The JavaScript templates are not installed by default. If you open the New Project dialog, you'll see a link Click here to go online and find templates. Click this link and you'll see all the other templates you can install. The JavaScript ones are in the Samples section. I assume that by tablet apps you mean Windows Store apps, so open that section and take your pick.
BTW, this is for Visual Studio 2013 Pro, I haven't got the Express version installed so I don't know if it works there.
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.
I had the same problem on a machine that only had Visual Studio 2013 Express for Windows (not desktop) installed. Going to Control Panel, Add/Remove Programs and running a repair on VS fixed it - the New Project dialog now lists JavaScript Store App templates.
Possibly I should mark my question as a dup and redirect here?