<a href="#">TIKLA</a>

<span>merhaba dünya</span>
a{display: inline-block; background: #00FF99; padding:20px; border-bottom:4px solid #00CC00; color:#00CC99; text-decoration:none; margin-bottom:20px;}
span{display:block; font-size:30px;}
$("a").click(function(){
  return "W3TR";
});
$("a").click(function(event){
  $("span").html(event.result);
}); 

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