how to calculate number of months and days in javascript

Hi,

I want to calculate number of months and days between two dates using javascript.

 

function calculate(){
      var datefrom = $("#datefrom").val();
      var dateto = $("#dateto").val();
      var oneDay = 24*60*60*1000; // hours*minutes*seconds*milliseconds
      var firstDate = new Date(datefrom);
      var secondDate = new Date(dateto);
      var days = Math.abs((firstDate.getTime() - secondDate.getTime())/(oneDay));
      console.log(days);
} 

 

 

Date From:

Date To: