anchor.diff:          <ul class="courseul course-menu course-video-menu clearfix js-course-menu" data-ower="all" data-sort="last"
               style="position: absolute; left: 0px;">
               <li class="course-menu-item"><a class="active" href="javascript:void(0)" id="plMenu">评论</a></li>
  +            <li class="course-menu-item">
  +                总时间：<p id="demo"></p>
  +                暂停时间：<p id="demo1"></p>
  +                <button onclick="myFunction()">点我</button>
  +            </li>
               <%--<li class="course-menu-item"><a href="javascript:void(0)" id="qaMenu">问答</a></li>--%>
           </ul>
           <div id="disArea" class="lists-container list-wrap">
  
positive.code: <script src="${pageContext.request.contextPath}/static/public/js/video/video.js"></script>
  <script src="${pageContext.request.contextPath}/static/public/js/video/video-comment.js"></script>
  <script type="text/javascript">
      /*评论js*/
      /*评价textarea框*/
      $("#js-pl-input-fake").on("click", function (e) {
  
negative.code:     <div id="bgarea" class="video-con">
          <div class="js-box-wrap" style="width: 100%; height: 269px;">
              <div id="J_Box" class="course-video-box" name="<c:out value='${catalog.courseId}'/>">
                  <video id="example_video_1" class="js-box-wrap video-js vjs-default-skin" controls  style="width: 100%; height: 269px;"
                         poster="/OnlineCourseFronten/file/get?url=<c:out value='${catalog.previewImage}'/>" ata-setup="{}">
                      <source src="/OnlineCourseFronten/file/get?url=<c:out value='${catalog.url}'/>" type='video/mp4' />
                      <%--<source src="http://vjs.zencdn.net/v/oceans.webm" type='video/webm' />--%>
  