<span>W3TR</span>
<span>W3TR</span>
<span>W3TR</span>

span{display:block; font-size:30px; margin-bottom:20px;}

$("span").each(function(i){
  $(this).on("click", {x:i}, function(event){
    alert("data numarası: " + event.data.x);
  });
});