选择班级的家长ID时遇到问题

Question

I am trying to select class of different id.

I got the id and alert it but unable to get parent id. Please help me!

THANKS

Here is what i have been trying:

HTML

<div id="inp1" class="col-md-12">

  <button id="1p" class="cr1 btn btn-default col-md-3" type="button">Go!</button>
  <input type="text" required value="input 1" name="opt1_1" class="btn btn-default col-md-9">

</div>

  <button id="2p" class="cr1 btn btn-default col-md-3" type="button">Go!</button>
   <input type="text" required value="input 2" name="opt1_2" class="btn btn-default col-md-9">
</div>



       jQuery
     $('.cr1').click(function(){
     var cr= $(this).attr("id");
      var getpar= cr.parent().attr('id');
         alert(getpar);
        });

Answer 1

cr is a string containing the button's id, it is not an element

you should do

$(this).parent().attr('id');

see: http://jsfiddle.net/5hBrH/

Answer 2

fiddle

 $('.cr1').click(function(){
 var $this = $(this); //<-- changed
 var cr= $(this).attr("id");
  var getpar= $this.parent().attr('id');//<-- changed
     alert(getpar);
    });