Prevent bubbling in knockout

no-bubble.js

ko.bindingHandlers.noBubble = {
  init: function(element, valueAccessor) {
    var eventName = ko.utils.unwrapObservable(valueAccessor());
    ko.utils.registerEventHandler(element, eventName, function(event) {
      event.cancelBubble = true;
      if (event.stopPropagation) {
        event.stopPropagation();
      }
    });
  }
};