Calculate all dates in between given start and end date using javascript

Question

I have a start-date and end-date and I want to calculate array of dates between these days based on a given duration.
for example,
if start date is 01/01/2015 and end date is 01/06/2015 and if I give duration as 3 months then out put should be:

01/04/2015  
01/06/2015  

How to achieve this using JavaScript and I need to display it in a form.

Answer 1

If you want to calculate difference between two dates using javascript:

Then,

function dateDiff() { 
   var dtFrom = document.getElementById('txtFromDate').value;
   var dtTo = document.getElementById('txtToDate').value;

   var dt1 = new Date(dtFrom);
   var dt2 = new Date(dtTo);
   var diff = dt2.getTime() - dt1.getTime();
   var days = diff/(1000 * 60 * 60 * 24);
   alert(dt1 + ", " + dt2);

   alert(days);
   return false;
}
function isNumeric(val) {
   var ret = parseInt(val);
}

HTML:

<label for="txtFromDate">From Date : </label>
   <input type="text" id="txtFromDate" name="txtFromDate" size="10" maxlength="10" value="03/25/2013"/><br/>
   <label for="txtToDate">To Date : </label>
   <input type="text" id="txtToDate" name="txtDate" size="10" maxlength="10" value="03/26/2013"/><br/>
   <button id="btnCheck" name="btnCheck" onClick="dateDiff();" type="button">Difference</button>

AFTER EDIT:

Following solution is to get all dates between specified dates.

Working Demo

// using Datepicker value example code
$('#getBetween').on('click', function () {
    var start = $("#from").datepicker("getDate"),
        end = $("#to").datepicker("getDate");
    var between = getDates(start, end);
    $('#results').html(between.join('<br> '));
});

// This function doing this work.
function getDates(start, end) {
    var datesArray = [];
    var startDate = new Date(start);
    while (startDate <= end) {
        datesArray.push(new Date(startDate));
        startDate.setDate(startDate.getDate() + 1);
    }
    return datesArray;
}