The best JS SDK for mobile devices?

I’m planning to study programming mobile devices.
But I don’t know what currently is the best JavaScript SDK ?

I’m aware of these SDKs below,

http://www.appcelerator.com/titanium/titanium-sdk/

My question is which is the best?

Or is there anything our there that I don’t know?

Hey solidcodes,

I’ve not used either of those, but I have played around a little with the Sencha Touch framework, which seemed pretty good… the documentation was good too. It might be worth asking over in the mobile forum too.

@fretburner ;

Thanks dude will try that.