angular alert service

<!DOCTYPE html>
<html>

  <head>
    <link data-require="bootstrap-css@2.3.2" data-semver="2.3.2" rel="stylesheet" href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" />
    <script data-require="angular.js@1.0.7" data-semver="1.0.7" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
    <script data-require="angular-ui-bootstrap@0.5.0" data-semver="0.5.0" src="http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.5.0.min.js"></script>
    <script src="script.js"></script>
  </head>

  <body ng-app="myApp">
    spacer goes here
    <div>
        <alert ng-repeat="alert in alerts" type="alert.type" close="alert.close()">{{alert.msg}}</alert>
    </div>
    <div ng-controller="MainCtrl">
      {{msg}}
    </div>
  </body>

</html>


 var myApp= angular.module('myApp',['ui.bootstrap']);
 
 myApp.factory('myService',function($q,$timeout,$rootScope){
   
    return {
      getData: function() {
        var deferred = $q.defer();
        $timeout(function(){
          if (true) {
            $rootScope.$broadcast('failure',{a:5,b:3});
            console.log("in here");
            deferred.reject("rejected");
          }
          else {
            deferred.resolve("success!");
          }
        },2000);
        return deferred.promise;
      }
    };
   
   });
   
myApp.factory('alertService',function($rootScope){
  $rootScope.alerts = [];
  var alertService = {  
    add:function(type,msg) {
      $rootScope.alerts.push({type:type,msg:msg,close:function(){alertService.closeAlert(this)}});
    },
    closeAlert: function(alert){
      alertService.closeAlertAtIndex($rootScope.alerts.indexOf(alert));
    },
    closeAlertAtIndex: function(index) {
      $rootScope.alerts.splice(index,1);
    }
  }
  return alertService;
});   
 
 myApp.controller('MainCtrl',function($scope,myService,alertService){
    $scope.msg = myService.getData();
    
    $scope.$on('failure',function(event,data){
      alertService.add('error','Oh snap! Change a few things up and try submitting again.');
    });
});