Postbacks allow you to build interactive web applications. You
event. When the event fires, the element will post back to the
event/1 function on the calling page (or
alternatively some delegate module) with the element's tag.
This allows you to use the power of Erlang pattern matching to
build an event-driven application.
Nitrogen postbacks will execute sequentially in the order they are
pressed, meaning if one postback is taking a while, clicking another
postback will be delayed until the first postback completes.