Display estimated shipping date on Shopify

{{ '//cdnjs.cloudflare.com/ajax/libs/datejs/1.0/date.min.js' | script_tag }}

function setShipDate () {
    // element to write date to  
    var shipdate = document.getElementById("js-ship-date");
    // Set start date to today - end date in 2 days
    var startDate = new Date();
    var endDate = "", noOfDaysToAdd = 2, count = 0;
    // Map numeric month to name  
    var month = new Array();
      month[0] = "JAN";
      month[1] = "FEB";
      month[2] = "MAR";
      month[3] = "APR";
      month[4] = "MAY";
      month[5] = "JUN";
      month[6] = "JUL";
      month[7] = "AUG";
      month[8] = "SEP";
      month[9] = "OCT";
      month[10] = "NOV";
      month[11] = "DEC";

    while(count < noOfDaysToAdd){
        // add a day to the end date each loop
        endDate = new Date(startDate.setDate(startDate.getDate() + 1));
        // only count when not a weekend
        if(endDate.getDay() != 0 && endDate.getDay() != 6){
           count++;
        }
    }
  
    // update shipdate HTML
    shipdate.innerHTML= month[endDate.getMonth()] + ' / ' + endDate.getDate() + ' / ' + endDate.getFullYear();
}

setShipDate();

#============ Another way ==================#

<p>Order today, and you'll receive your package between <span id="fromDate"></span> and <span id="toDate"></span>.</p>
{{ '//cdnjs.cloudflare.com/ajax/libs/datejs/1.0/date.min.js' | script_tag }}
<script>
  var fromDate = Date.today().addDays(5);
  if (fromDate.is().saturday() || fromDate.is().sunday()) { 
    fromDate = fromDate.next().monday();
  }
  var toDate = Date.today().addDays(10);
  if (toDate.is().saturday() || toDate.is().sunday()) { 
    toDate = toDate.next().monday(); 
  }
  document.getElementById('fromDate').innerHTML = fromDate.toString('dddd MMMM dS');
  document.getElementById('toDate').innerHTML = toDate.toString('dddd MMMM dS');
</script>