Question

<div style="width:100%;background-color:  #61b832;border-radius: 10px;color:white;text-align: center">Videos List</div>
<table style="width:100%;"id="videoTable">
    <c:forEach items="${requestScope.userInfo.videoList}"var="video"varStatus="0">
        <script>
            var fullvideoUrl='<c:out value="${video.videoUrl}"></c:out>';
            var videocode='http://www.youtube.com/embed/'+youtube_parser(fullvideoUrl);
            $('#videoTable').prepend('<tr class="appendVideo"><td  style="width:80%;border-bottom: 1px solid #CCC;"><c:out value="${video.videoDescription}"></c:out></td><td  style="width:20%;border-bottom: 1px solid #CCC"><img src="images/fancybox_play-button-icon.png" class="changeVideo" videoId="<c:out value="${video.videoId}"></c:out>" videoUrl ="'+videocode+'"/></td></tr>');
        </script>
    </c:forEach>
</table>
</div>

This is what i ‘m trying to do but each video gets added twice in the table

Answer 1

You may want to use a c:if as below:

    <c:if test="${requestScope.userInfo.videoList.size() >0}" >
      <script>
          $('#videoTable').prepend("1");
      </script>
    </c:if> 

EDIT:

Not sure why are using script. I think you can simply write like this:

 <div style="width:100%;background-color:  #61b832;border-radius: 10px;color:white;text-align: center">Videos      List</div>
  <table style="width:100%;"id="videoTable">
   <c:forEachitems="${requestScope.userInfo.videoList}" var="video" varStatus="0">
     <tr class="appendVideo"><td  style="width:80%;border-bottom: 1px solid #CCC;"><c:out value="${video.videoDescription}"></c:out></td><td  style="width:20%;border-bottom: 1px solid #CCC"><img src="images/fancybox_play-button-icon.png" class="changeVideo" videoId="<c:out value="${video.videoId}"></c:out>" videoURL="http://www.youtube.com/embed/${video.videoUrl}"/></td></tr>
   </c:forEach>
  </table>
</div>

If you want sorting of the results in reverse, simply sort your requestScope.userInfo.videoList using Collections.sort in reverse before printing that in the UI. Also if there is any modification required in the URL, perform in the original video list itself.