Detect, Undo And Redo DOM Changes With Mutation ObserversDetect, Undo And Redo DOM Changes With Mutation Observers June 4, 2014 I’ve been wondering why DOM Mutation Observers, which can monitor changes to one or more DOM elements and return a report of what changed, aren’t used more often in the wild. Mutation Observers have long-replaced DOM Mutation Events (which were deemed slow, verbose and crashy), are fairly well documented and a polyfill for IE9
