Changing the date format onblur

<!DOCTYPE html>
<html>

  <head>
    <link rel="stylesheet" href="style.css">
    <script src="script.js"></script>
  </head>

  <body>
    <h1>Hello Plunker!</h1>
    Enter Date : <input type="text" placeholder='dd/mm/yyyy' onblur='changeFormat()' id='ipdate'/>
    <br />
    After conversion : <div id='formattedDate'></div>
  </body>

</html>

// Code goes here

var changeFormat = function (ipdate) {
    
    var d = document.getElementById('ipdate').value;
    
    d = d.split("/");
    d.reverse();
    
    document.getElementById('formattedDate').innerHTML = d[0]+'/'+d[1]+'/'+d[2];
}

/* Styles go here */