How to enable submit button if at least two checkboxes are checked?

Question

With the help of answers I found here, I try to disable submit button and send an alert message when clicked on it until there\'s not at least 2 checkboxes checked.

What

Answer 1

You should change your code as

$('#frmCompare :checkbox').change(function(){

  //update selected variable
  selected = $('#frmCompare :checkbox:checked').length

  if (selected >= 2) {
     $('#btnCompare').attr('enabled');
  }
});