[simonhughes22]

Knockout does this but it also has declarative html bindings, so there is no need to do the observer logic, you just add some lightweight annotations to your html and it binds for you. I think this is a lightweight alternative to ko, but ko does a lot more and is very easy to use.

[sinkasapa]

But I only want the reactive programming part. How do I take out all the parts that I don't want or need in knockout?