title: TypeError: 'stepUp' called on an object that does not implement interface HTMLInputElement in jquery
body: <p>I am calling the php file using jquery $.post method.At the time of the retriving the data I am getting an error.</p>
  
  <p>I did search on google,found 4 to 5 solutions but those are not working.</p>
  
  <p>Please help me.</p>
  
  <p>this is my code,</p>
  
  <p><strong>Jquery</strong></p>
  
  <pre><code> $(document).ready(function(){
  
   $("[name='side_door_on_size']").click(function (){
          var side_door_on_size=$(this).val();
          $.post('&lt;?php echo get_home_url(); ?&gt;/wp-content/plugins/thermax/filter.php',
                 {side_door_on_size:side_door_on_size}, 
                 function(data){
                    alert(data);
                });
         })
    })
  </code></pre>
  
  <p><strong>Html</strong></p>
  
  <pre><code>&lt;input type="radio" name="side_door_on_size" class="side_door_on_size" id="side_door_on_size" value="25m"/&gt;25m
  </code></pre>