title: Clear text area
body: <p>In Onselect event I have script:</p>
  
  <pre><code>$("#vinanghinguyen_images_bbocde").val('');
  $("#vinanghinguyen_images_bbocde").val(vinanghinguyen_final_bbcode);
  </code></pre>
  
  <p>I want clear text area id="vinanghinguyen_images_bbocde" before add value to it. but textarea add add add add and value and not clear. I want clear it before add value</p>
  
  <p>I use uploadify here is my function</p>
  
  <pre><code>&lt;script type = "text/javascript" &gt;
    $(document).ready(function() {
      vinanghinguyen_bbcode = '';
      vinanghinguyen_final_bbcode = '';
      vinanghinguyen_link = '';
      vinanghinguyen_final_derect_link = '';
      response = '';
  
      $('#file_upload').uploadify({
        'uploader'  : '{SITE_FULL_URL}/uploadify/uploadify.swf',
        'script'    : '{SITE_FULL_URL}/uploadify/uploadify.php',
        'cancelImg' : '{SITE_FULL_URL}/uploadify/cancel.png',
        'folder'    : 'data/picture_upload/2011',
        'auto'      : false,
        'multi'     : true,
        'buttonText': '',
  
        'onComplete': function(event, ID, fileObj, response, data) {
          vinanghinguyen_bbcode = '[IMG]' + 'http://cnttvnn.com' + response + '[/IMG]' + '\n';
          vinanghinguyen_final_bbcode = vinanghinguyen_final_bbcode + vinanghinguyen_bbcode;
          vinanghinguyen_derect_link = 'http://cnttvnn.com' + response + '\n';
          vinanghinguyen_final_derect_link = vinanghinguyen_final_derect_link + vinanghinguyen_derect_link;
  
          $("#vinanghinguyen_images_bbocde").val('').val(vinanghinguyen_final_bbcode);
        //$("#vinanghinguyen_images_derect_link").val(vinanghinguyen_final_derect_link);
          $("#vinanghinguyen_result").show();
          $(".uploadifyQueue").height(5);
        },
  
        'onSelect': function(event, ID, fileObj) {
          $("#vinanghinguyen_images_bbocde").val('');
          $("#vinanghinguyen_result").hide();
          $(".uploadifyQueue").height(315);
        },
      });
    });
  &lt;/script&gt;
  </code></pre>