Tryit Editor v1.8

Source Code:

<!DOCTYPE html>
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js">
</script>
<script>
$(document).ready(function(){
  testObj=new Object();
  testObj.greetingMorn="Good Morning!";
  testObj.greetingEve="Good Evening!";
  $("#btn1").click(function(){
    $("div").data(testObj);
  });
  $("#btn2").click(function(){
    alert($("div").data("greetingEve"));
  });
});
</script>
</head>
<body>

<button id="btn1">Attach data to div element</button><br>
<button id="btn2">Get data attached to div element</button>
<div></div>

</body>
</html>

Result:

W3Schools.com - Try it yourself

Edit the code above and click "Submit Code" to see the result.