如何获取ckeditor的内容

  <tr id="nr">
             <th style="10%"><span class="a_hong">*</span> 荣誉说明：</th>
             <td colspan="3" style="text-align:left;">
                  <textarea id="content" name="content" class="ckeditor">${ryInfo.content}</textarea>
             </td>
      </tr>

<script type="text/javascript">

var editor = null;

window.onload = function () {
     editor = CKEDITOR.replace("content"); //参数‘content’是textarea元素的name属性值，而非id属性值 
}

function savaData()(

　　var content = CKEDITOR.instances.content.getData(); //获取值
}
</script>