angular-datepicker/app/scripts/dateRange.js

'use strict';

var Module = angular.module('datePicker');

Module.directive('dateRange', function () {
  return {
    templateUrl: 'templates/daterange.html',
    scope: {
      start: '=',
      end: '='
    },
    link: function (scope) {
      scope.$watch('start.getTime()', function (value) {
        if (value && scope.end && value > scope.end.getTime()) {
          scope.end = new Date(value);
        }
      });
      scope.$watch('end.getTime()', function (value) {
        if (value && scope.start && value < scope.start.getTime()) {
          scope.start = new Date(value);
        }
      });
    }
  };
});