Knockoutjs

Knockout comes with a binding to show elements (visible), but not one to hide elements. So here it is: ko.bindingHandlers[‘hidden’] = update: (element, valueAccessor) -> value = ko.utils.unwrapObservable(valueAccessor()) isCurrentlyVisible = (element.style.display != "none") if (value && isCurrentlyVisible) element.style.display = "none" else if (!value && !isCurrentlyVisible) element.style.display = ""