Using checkboxes to control other elements

Using checkboxes to control other elements

I want to use two checkboxes to control the appearance of two blocks. The click method doesn't work well for this situation. I have tried to use the change method, but don't know how to detect which checkboxes are checked. Can someone give a hand please?

  2.     $(':checkbox').change(function(){
  3.           // ....
  4.           $(':checkbox:checked').each(function(){ 
  5.            // ???? 
  6.           });
  7.     });
    8.