onEnter onExit

Usefull if want to show alert before leaving the page

.state('activities', {
    url: '/activities',
    controller: 'AllActivitiesController',
    controllerAs: 'activities',
    templateUrl: '/app/templates/allActivities.html',
    onEnter: function(){
        console.log("Entering into state");
    },
    onExit: function(){
        console.log("Leaving the state");
    }
})