Dynamics 365/CRM | Get the value of a Date field (01/31/2018 or 31/01/2018)

gistfile1.js

// Get the value of the Opportunity Est. Close Date 
var date = Xrm.Page.data.entity.attributes.get("estimatedclosedate").getValue();
if (date != null) {
  var day = date.getDate();
  var month = date.getMonth();
  var year = date.getFullYear();
  month++;
  
  // Add leading 0's to single digit days and months
  if (day < 10) {day = "0" + day;}
  if (month < 10) {month = "0" + month;}
  
  // Create a variable with the formatted date as MM/DD/YYYY
  var formattedDate = month + "/" + day + "/" + year;
  
  // Create a variable with the formatted date as DD/MM/YYYY
  //var formattedDate = date + "/" + month + "/" + year;
}