I have the following DOM structure and I want to know if the Adjecent Element of the selected checkbox is a "text" type element or not..

		<label><input type="checkbox">AA:</label>
				<li><label><input type="checkbox" id="bb">BB:</label><input type="text"></li>
				<li><label><input type="checkbox">CC:</label><input type="radio"></li>
                               <li><label><input type="checkbox" id="dd">DD:</label><input type="text"></li>
I am using the following jQuery code

Code JavaScript:
$('input[type=checkbox]').bind('click change', function(){
  var getElementType = $(this + ' + input').attr('type');

but getting this error:
uncaught exception: Syntax error, unrecognized expression: [object HTMLInputElement]

In the above DOM structure, it should be for the chekboxes with id "bb" and "dd",

can someone please help me with this?