Persistent Undo/Playback manager in JavaScript

In the article, we would like to describe the possibility of creation of persistent JavaScript objects on client’s side, using implementation of undo manager as an example. The article demonstrates that proposed uniform solution expands area where JavaScript objects may be used. To prove the concept, a live example that creates visual “trip” using Google Maps is included as well as demo-roll is based on usual HTML form, Drag and Drop components.