how to add “•” each time i hit enter key in textarea

by Ninay is Unknown

HTML

<textarea>•</textarea>

JavaScript

/* $('textarea').on('keydown',function(e){
  var t = $(this);
  switch(e.which){
    case 13:
      t.val(t.val()+'•');
      return false;
  }  
}); */
$('textarea').on('keydown',function(e){
  var t = $(this);
  switch(e.which){
    case 13:
      t.val(t.val()+"\n"+'•').css("text-decoration","underline");
      return false;
  }  
});