Dates comparing not get work in angular js

Question

Can anyone tell me why my date is not get working. Basically when i try to compare date then is is not working in angularJs

  var dateObj1 = $filter("date")(Date.now(), 'dd-MMM-yyyy'); // output is "04-May-2016"
    var dateObj2 = $scope.employee.Tue; // output is "03-May-2016"
    if (dateObj1 < dateObj2) {         
        return true
    } else {
        return false;
    }

above is working but for case below is not working if i use date as "26-Apr-2016" i get true in return

 var dateObj1 = $filter("date")(Date.now(), 'dd-MMM-yyyy'); // output is "04-May-2016"
    var dateObj2 = $scope.employee.Tue; // output is "26-Apr-2016"
    if (dateObj1 < dateObj2) {         
        return true
    } else {
        return false;
    }

Answer 1

According to the documentation of the date filter, this filter

Formats date to a string based on the requested format.

So when comparing dateObj1 to dateObj2, you are using the string comparison which is the lexicographic order.

You must parse your string to a Date (by using Date.parse) to obtains the wanted results

Answer 2

Check out This, Date.parse is needed to accomplish this task

var jimApp = angular.module("mainApp",  []);

jimApp.controller('mainCtrl', function($scope, $filter){
  var dateObj1 = $filter("date")(Date.now(), 'dd-MMM-yyyy'); // output is "04-May-2016"
  var dateObj2 = Date.parse("26-Apr-2016");
  if (Date.parse(dateObj1) < dateObj2) {
    alert(true);
    return true
  }
  else {
    alert(false);
    return false;
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.22/angular.min.js"></script>
<div ng-app="mainApp" ng-controller="mainCtrl">
</div>