knockout binding handler using custom jquery domcallback plugin

ko.jqhtml.coffee

ko.bindingHandlers.jqHtml =
  init: (element, valueAccessor) ->
    $(element).preMutate (options, el) ->
      if ko.isObservable valueAccessor()
        valueAccessor().valueWillMutate()
    $(element).onMutate _.debounce (argsCollection) =>
      @argsCollection = argsCollection
      if ko.isObservable valueAccessor()
        valueAccessor().valueHasMutated()
    , 100

  update: (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) ->
    content = ko.utils.unwrapObservable(valueAccessor())
    $(element).children().each( (i,el) -> ko.cleanNode(el) )
    if _.difference($(element).children().get(), content.get()).length > 0 || _.difference(content.get(),$(element).children().get()).length > 0
      $(element).children().peek().detach().unpeek()
      $(element).peek().append(content).unpeek()
    ko.applyBindingsToDescendants(viewModel, element)