Java Script Print Object

<!DOCTYPE html>
<html>
<head>
<meta charset = "utf-8">
</head>
<body>
<h2>JavaScript Objects</h2>
<script>
var plane= {
  type:"MS", 
  model:2001, 
  color:"white"
}
var total =Object.values(plane).length;
document.write("first property value is " + Object.values(plane)[0]+"<br>");
document.write("last property value is " + Object.values(plane)[total-1]);
</script>

</body>
</html>