By convention, anything suffixed with $ is a stream. input$ is a stream of input events on all elements matching the selector ".field". The declaration for name

By convention, anything suffixed with $ is a stream. input$ is a stream of input events on all elements matching the selector ".field". The declaration for name$ says to take that stream of events and turn it into a stream of the value of those events, and to seed it with an empty string as the initial value. Reactive programming is a paradigm shift and definitely tough to wrap your head around at first. André Staltz (the creator of Cycle) has a good intro here: https://gist.github.com/staltz/868e7e9bc2a7b8c1f754 https://gist.github.com/staltz/868e7e9bc2a7b8c1f754