javascript - JS functions in object disappears -

when call function:

var session = function(){     console.error(service.get());     if(service.get().session === undefined){         $localstorage.user.session = {             timeleft: 0,  //  time left until user session ends (in minutes).             start: function(timeleft) {                 $localstorage.user.session.timeleft = timeleft;                 $localstorage.user.session.interval;             },             stop: function(){                 $interval.cancel($localstorage.user.session.interval);             },             interval: $interval(function () {                 $localstorage.user.session.timeleft -= 1;                  if($localstorage.user.session.timeleft <= 0){                     $state.go('signin');                 }             }, 0.125 * 60000)         };     }      return $localstorage.user.session; }; 

from

function sessionrestart(){     session(); }; sessionrestart(); 

it creates session object variables, when reload page doesn't populate variables functions. how can fix that?

edit application angularjs , i'm using ngstorage $localstorage, , code meant user session can found in factory in application.

marcospérezgude made me think of solution problem. move $interval outside of $localstorage fixed problem. not sure why wouldn't work thou.

the code looks this:

var session,     startsession: function(timeleft) {         if($localstorage.user.session === undefined){             if(timeleft === undefined){                 timeleft = 0;             }              $localstorage.user.session = {                 timeleft: timeleft             };         }          if (session === undefined) {             session = $interval(function () {                 $localstorage.user.session.timeleft -= 1;                  if($localstorage.user.session.timeleft === undefined){                     service.stopsession();                 }                  if($localstorage.user.session.timeleft <= 0){                     $state.go('signin');                 }             }, 1 * 60000);  //  time in milliseconds. minutes * milliseconds = total milliseconds before interval repeats.         }     },     stopsession: function() {         $interval.cancel(session);         session = undefined;     };