How to retrieve an input element and its surrounded span?

For

<span id="" ...>
  <input id="" ...>

Is there any way to retrieve span id? input element is embedded within span?

document.getElementById("inputId").parentNode;

If you're using jQuery:

$('#input-id').parent().attr('id');

If not:

document.getElementById('input-id').parentNode.getAttribute('id');

EDIT: Ooops - removed extra parentheses after parentNode!

var parentControl = document.getElementByID("id goes here").parentNode;