I don't mind those explicit set calls as much. I prefer when `obj.foo = 10` is a side-effect-free operation that only affects `obj` instead of something that triggers bunch of layout updates and got knows what other changes as well.
I do agree on the callback thing though and I find it kind of sad that not many people use CPS compilers for JS even though things like Cofeescript and SASS are pretty common.
I seriously considered going through a CPS transforming compiler for my major production Javascript application, but it's a risky step to take, relative to using a less invasive transformation like coffeescript.
It comes down to lack of mature tooling and debugability: coffeescript is easy to debug, because it's a very light level of syntactic sugar and dropping into the Javascript is easy. A more aggressive compilation step would require me to put a lot more trust in the maturity of the compiler and associated tools.
I do agree on the callback thing though and I find it kind of sad that not many people use CPS compilers for JS even though things like Cofeescript and SASS are pretty common.