html5 - jQuery can't change class of all spans inside a div -

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in following example, how can change class of <span> inside particular h2 <div>, while leaving 1 clicked unchanged?

<!doctype html> <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <title>side bar voting thingy</title> <style type="text/css"> .hide {     display: none; } .no-like {     color: blue; }  </style>  <script type="text/javascript" src="http://localhost/site/scripts/jquerycore.js"></script> <script type="text/javascript"> $(function() {     $(".like").click(function() {          var haslike = $(this).data("id");         var data = 'id='+haslike;         console.log($(this).data('id'));          if(haslike) {             // ajax call             $.ajax({                 type:"get",                 url:"demo.php",                 data:data,                 beforesend:function(html){                     // we'll think of here                 },                 success: function(page_data){                     // remove class like, add class no-like                     $('.like[data-id="'+page_data+'"]').removeclass('like').addclass('no-like');                     //change class other links other 1 user clicked                     //hard coded example                     $('.h2[data-id="9"]').siblings('.like').removeclass('like').addclass('hide');                 },                 error: function(yikes){                     //to later                 },             });         }         return false;     }); }); </script> </head> <body>  <div id="container">      <div class="h1" data-id="1">teachers</div>         <div class="h2" data-id="2">who favorite math teacher?             <div>* homer simpson &nbsp  <span class="like" data-id="3" data-sec="2">like</span></div>             <div>* elmer fudd &nbsp     <span class="like" data-id="4" data-sec="2">like</span></div>             <div>* bugs bunny &nbsp     <span class="like" data-id="5" data-sec="2">like</span></div>             <div>* obelix &nbsp         <span class="like" data-id="6" data-sec="2">like</span></div>             <div>* mojo jojo &nbsp      <span class="like" data-id="7" data-sec="2">like</span></div>         </div>         <br>     <div class="h1" data-id="8">restaurants</div>         <div class="h2" data-id="9">which favourtie restaurant in town?             <div>* mcdonalds &nbsp              <span class="like" data-id="10" data-sec="9">like</span></div>             <div>* kfc &nbsp                    <span class="like" data-id="11" data-sec="9">like</span></div>             <div>* heart attack grill &nbsp <span class="like" data-id="12" data-sec="9">like</span></div>             <div>* in-n-out &nbsp               <span class="like" data-id="13" data-sec="9">like</span></div>             <div>* popeye's &nbsp               <span class="like" data-id="14" data-sec="9">like</span></div>         </div>  </div>  </body> </html>

i need select particular h2 <div> in page. there may many more.

success: function(page_data){                     // remove class like, add class no-link                     $('.like[data-id="'+page_data+'"]').removeclass('like').addclass('no-like');                     //change class other links other 1 user clicked                     //hard coded example                     $('.h2[data-id="9"]').siblings('.like').removeclass('like').addclass('hide');             },

change spans class, , add $(this).removeclass("class_name");


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