function Ctrl2($scope) {
 $scope.format = 'M/d/yy h:mm:ss a';
}
angular.module('time', [])
// Register the 'myCurrentTime' directive factory method.
// We inject $timeout and dateFilter service since the factory method is DI.
 .directive('myCurrentTime', function ($timeout, dateFilter) {
// return the directive link function. (compile function not needed)
 return function (scope, element, attrs) {
 var format, // date format
 timeoutId; // timeoutId, so that we can cancel the time updates
// used to update the UI
 function updateTime() {
 element.text(dateFilter(new Date(), format));
 }

// watch the expression, and update the UI on change.
 scope.$watch(attrs.myCurrentTime, function (value) {
 format = value;
 updateTime();
 });
// schedule update in one second
 function updateLater() {
// save the timeoutId for canceling
 timeoutId = $timeout(function () {
 updateTime(); // update DOM
 updateLater(); // schedule another update
 }, 1000);
 }

// listen on DOM destroy (removal) event, and cancel the next UI update
// to prevent updating time ofter the DOM element was removed.
 element.bind('$destroy', function () {
 $timeout.cancel(timeoutId);
 });
 updateLater(); // kick off the UI update process.
 }
 });