javascript - Post data to current php page with ajax -

i want post data current page ajax.but couldnt that.

i have doctor panel , wanna patient's data 'hastalar' table in db using patient's national id:'tc'.session using doctor guess cant use $_session patient @ same time.and wanna use 1 php page.so cant see patient's datas in current page.pls me guys.

dokyon.php

textbox

<a href="#" id="ara" class="ara" ><br/>search patient</a> <input type ="text" id="tc" name="tc" /> 

jquery

   <script type="text/javascript" >      $(function() {         $(".ara").click(function(){         var tc = $('#tc').val();         $.ajax({             url:'dokyon.php'//current page             type: 'post',             data:{tc:tc},             success: function(){                 alert(data);              }         });     });   });    </script> 

php codes

    <?php            $tc=$_post['tc'];         echo $tc;          $query = mysqli_query($connection,"select * hastalar tc_no=$tc");           while($hasta = mysqli_fetch_array($query)){           echo $hasta['name'];}           ?> 

for ajax code, need add datatype parameter , add parameter of success: function(data), this:

$.ajax({             url:'dokyon.php'//current page             type: 'post',             data:{tc:tc},             datatype:"html",             success: function(data){                 alert(data);              }         }); 

for additional: debuging sending data inspect element of browser. success :)