I found it very difficult to figure out the correct JS functions for all controls. Like server side code and markup, any way can I enable intellisense for javascript properties and methods in visual studio? Now its listing all the common things.
I had similar problem and I performed all the steps from the mentioned page in previous thread...
My problem was, that I had installed Resharper in my Visual Studio and in its settings there was turned on Resharper Intellisense... After I changed it to Visual Studio Intellisense, closed Visual Studio and opened solution again, it worked correctly...
Or you can try to check if you have another Visual Studio extensions which mess with intellisense...