json - AngularJS list with custom filter not sorting correctly -


i trying figure out why angularjs "latest upcoming events" list not correctly showing latest upcoming events. order seems out of place.

out of place dated list: live demo here

upcoming events:  repeating event 2015-07-16  meeting 2015-07-26  happy hour 2015-07-19  meeting @ google 2015-07-15

here view:

<body ng-app="listapp">  <div class="container" ng-controller="eventcontroller">  <h3>upcoming events:</h3>      <ul ng-repeat="event in events | upcomingevents | limitto: 4">         <li>{{ event.title }}</li>         <li>{{ event.start }}</li>     </ul>

and here controller custom filter show latest upcoming events based on current date:

    var app = angular.module('listapp', []);      app.controller('eventcontroller', function($scope, $http){         $http.get('http://www.ogmda.com/sandbox/fullcalendar/demos/json/events.json').success(function(data) {              $scope.events = data;     }) });      app.filter('upcomingevents', function () {  return function (input) {  var upcomingevents = [];   if(!input){      return upcomingevents;     }       upcomingevents = input.filter(function (data) {     var currentdate = new date();           console.log(new date(data.start));      if ((new date(data.start) - currentdate) >= 0) {         return true;     } else {         return false;     } });  upcomingevents.sort(function (a, b) {     return a.start - b.start; });   return upcomingevents;  }; });  app.$inject = ['$scope'];

the json feed looks so:

 [   {   "title": "all day event",   "start": "2015-07-11"    },    {    "title": "long event",    "start": "2015-07-07",    "end": "2015-07-10"    },    {    "id": "999",    "title": "repeating event",    "start": "2015-07-09"     },     {     "id": "999",     "title": "repeating event",     "start": "2015-07-16"     },     {     "title": "meeting",     "start": "2015-07-12"     },     {     "title": "conference",     "start": "2015-07-11",     "end": "2015-07-13"     },     {     "title": "meeting",     "start": "2015-07-26",     "end": "2015-07-30"      },      {      "title": "lunch",      "start": "2015-07-12"      },       {      "title": "happy hour",      "start": "2015-07-19"       },       {       "title": "dinner",       "start": "2015-07-12"        },        {        "title": "birthday party",         "start": "2015-07-04"        },         {       "title": "meeting @ google",       "url": "http://google.com/",       "start": "2015-07-15"        }        ]

any tips can try troubleshoot this? thanks!

if intention filter items start dates in descending order, can use orderby:

 <ul ng-repeat="event in events | upcomingevents |orderby:'-start'| limitto: 4">         <li>{{ event.title }}</li>         <li>{{ event.start }}</li>     </ul>

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