Js Проверка даты в периоде

var period = "2017-01-01,2017-02-01"; 
var date = "2017-01-15"; 
 
var dates = period.split(","); 
 
var result = moment(date).isBetween(dates[0], dates[1], null, '()'); 
 
console.log("The given date is between the dates:", result);

<script src="https://momentjs.com/downloads/moment.js"></script>

function checkDateEntrance(date, period) { 
  var periods = period.split(','); 
 
  if (date >= new Date(periods[0]) && date <= new Date(periods[1])) 
    console.log('УРА!'); 
  else 
    console.log('ЖАЛЬ :('); 
} 
 
checkDateEntrance(new Date(), '2017-04-01,2017-05-13'); 
 
checkDateEntrance(new Date(), '2017-05-01,2017-05-13');