Parent ID based on child?

Question

JavaScript

Hello! The task is this: you need to find out the ID of the button's parent. I do so. I press the button. Next, I find out the parent of the pressed button. Next, I translate the parent into a string (I'm not sure what I'm doing right). Then I display the parent's ID through the alert. It prints undefined :( Please correct me.

$('table').on('click','button', function(){
  $per = $(this).parent();
  $lel = $.param($per);
  alert($lel).attr('id');

});

Answer 1

$('table').on('click','button', function(){
  var $parent = $(this).parent();
  alert($parent.attr('id'));
});

PS When declaring variables, use the var keyword if you don't want the variable to be global.