javascript - How to calculate the total days between two selected calendar dates -


let have startdate = 7/16/2015 , enddate = 7/20/2015. 2 dates stored in sharepoint list.

if user select exact date date in sharepoint list, can calculate total days = 2 , means without calculate on other days.

anyone can please on this?

i use following code calculate total day of difference without counting on weekend. cant figure out way how calculate total day of selected date without counting on other days. 

function workingdaysbetweendates(startdate,enddate) {  // validate input if (enddate < startdate)     return 'invalid !';  // calculate days between dates var millisecondsperday = 86400 * 1000; // day in milliseconds startdate.sethours(0,0,0,1);  // start after midnight enddate.sethours(23,59,59,999);  // end before midnight var diff = enddate - startdate;  // milliseconds between datetime objects     var days = math.ceil(diff / millisecondsperday);  // subtract 2 weekend days every week in between var weeks = math.floor(days / 7); var days = days - (weeks * 2);  // handle special cases var startday = startdate.getday(); var endday = enddate.getday();  // remove weekend not removed.    if (startday - endday > 1)              days = days - 2;   // remove start day if span starts on sunday ends before saturday if (startday == 0 && endday != 6)     days = days - 1;   // remove end day if span ends on saturday starts after sunday if (endday == 6 && startday != 0)     days = days - 1;  return days;  }

the following function calculates number of business days between 2 dates

function getbusinessdatescount(startdate, enddate) {      var count = 0;      var curdate = startdate;      while (curdate <= enddate) {          var dayofweek = curdate.getday();          if(!((dayofweek == 6) || (dayofweek == 0)))             count++;          curdate.setdate(curdate.getdate() + 1);      }      return count;  }      //usage    var startdate = new date('7/16/2015');  var enddate = new date('7/20/2015');  var numofdates = getbusinessdatescount(startdate,enddate);  $('div#result').text(numofdates);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>  <div id="result"/>


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