Javascript 在DOM中查找具有特定类名的最后一个跨度 9喜欢 Abc 你好，你好吗 2012年6月12日 7小时前 9喜欢 Abc 你好，你好吗 2012年6月12日 7小时前 9喜欢 Abc 你好，你好吗 2012年6月12日 7小时前

我有如上所述的html结构。。因此，从$（'.comments\u container'）开始，如何使用类“comment\u time”遍历到DOM中的最后一个跨度。我们将不胜感激

可以使用children（）进行遍历。但我想知道有没有更简单的方法可以使用选择器：

 <div class="comments_container clearfix">
 <hr />
<ul class="comment_struct">

      <li class="commenter_pic">
    <img src="images/im.jpg" alt="picture"/>
    <span class="button blue square likes">9 Likes</span>
      </li>
      <li class="comment_data">
           <ul class="post_info_options">
        <li class="commenter_name">Abc</li>
        <li class="comment"><p>hello how are you doing</p></li>
        <li class="time">
                        <span class="comment_time">12 June 2012<>
                       <span class="time_elapsed">7 hours ago</span>
          </li>
     <li class="options">
             <span><a href="#">Once More</a></span>
             <span><a href="#">Comment</a></span>
             <span><a href="#" class="comment_like">Like</a></span>
         </li>

     <li>

     </li>
 </ul>
</li>
<li class="delete_comment"><img src="images/Cancel.png" alt="delete_post"/></li>

   </ul>
   <br/>

    <ul class="comment_struct">

      <li class="commenter_pic">
    <img src="images/im.jpg" alt="picture"/>
    <span class="button blue square likes">9 Likes</span>
      </li>
      <li class="comment_data">
           <ul class="post_info_options">
        <li class="commenter_name">Abc</li>
        <li class="comment"><p>hello how are you doing</p></li>
        <li class="time">
                        <span class="comment_time">12 June 2012<>
                       <span class="time_elapsed">7 hours ago</span>
          </li>
     <li class="options">
             <span><a href="#">Once More</a></span>
             <span><a href="#">Comment</a></span>
             <span><a href="#" class="comment_like">Like</a></span>
         </li>

     <li>

     </li>
 </ul>
</li>
<li class="delete_comment"><img src="images/Cancel.png" alt="delete_post"/></li>

   </ul>
   <br/>



    <ul class="comment_struct">

      <li class="commenter_pic">
    <img src="images/im.jpg" alt="picture"/>
    <span class="button blue square likes">9 Likes</span>
      </li>
      <li class="comment_data">
           <ul class="post_info_options">
        <li class="commenter_name">Abc</li>
        <li class="comment"><p>hello how are you doing</p></li>
        <li class="time">
                        <span class="comment_time">12 June 2012<>
                       <span class="time_elapsed">7 hours ago</span>
          </li>
     <li class="options">
             <span><a href="#">Once More</a></span>
             <span><a href="#">Comment</a></span>
             <span><a href="#" class="comment_like">Like</a></span>
         </li>

     <li>

     </li>
 </ul>
</li>
<li class="delete_comment"><img src="images/Cancel.png" alt="delete_post"/></li>

   </ul>
   <br/>

您可以使用选择器：

 <div class="comments_container clearfix">
 <hr />
<ul class="comment_struct">

      <li class="commenter_pic">
    <img src="images/im.jpg" alt="picture"/>
    <span class="button blue square likes">9 Likes</span>
      </li>
      <li class="comment_data">
           <ul class="post_info_options">
        <li class="commenter_name">Abc</li>
        <li class="comment"><p>hello how are you doing</p></li>
        <li class="time">
                        <span class="comment_time">12 June 2012<>
                       <span class="time_elapsed">7 hours ago</span>
          </li>
     <li class="options">
             <span><a href="#">Once More</a></span>
             <span><a href="#">Comment</a></span>
             <span><a href="#" class="comment_like">Like</a></span>
         </li>

     <li>

     </li>
 </ul>
</li>
<li class="delete_comment"><img src="images/Cancel.png" alt="delete_post"/></li>

   </ul>
   <br/>

    <ul class="comment_struct">

      <li class="commenter_pic">
    <img src="images/im.jpg" alt="picture"/>
    <span class="button blue square likes">9 Likes</span>
      </li>
      <li class="comment_data">
           <ul class="post_info_options">
        <li class="commenter_name">Abc</li>
        <li class="comment"><p>hello how are you doing</p></li>
        <li class="time">
                        <span class="comment_time">12 June 2012<>
                       <span class="time_elapsed">7 hours ago</span>
          </li>
     <li class="options">
             <span><a href="#">Once More</a></span>
             <span><a href="#">Comment</a></span>
             <span><a href="#" class="comment_like">Like</a></span>
         </li>

     <li>

     </li>
 </ul>
</li>
<li class="delete_comment"><img src="images/Cancel.png" alt="delete_post"/></li>

   </ul>
   <br/>



    <ul class="comment_struct">

      <li class="commenter_pic">
    <img src="images/im.jpg" alt="picture"/>
    <span class="button blue square likes">9 Likes</span>
      </li>
      <li class="comment_data">
           <ul class="post_info_options">
        <li class="commenter_name">Abc</li>
        <li class="comment"><p>hello how are you doing</p></li>
        <li class="time">
                        <span class="comment_time">12 June 2012<>
                       <span class="time_elapsed">7 hours ago</span>
          </li>
     <li class="options">
             <span><a href="#">Once More</a></span>
             <span><a href="#">Comment</a></span>
             <span><a href="#" class="comment_like">Like</a></span>
         </li>

     <li>

     </li>
 </ul>
</li>
<li class="delete_comment"><img src="images/Cancel.png" alt="delete_post"/></li>

   </ul>
   <br/>

您正在查找

$（'comments\u container comment\u time'）

？您是指DOM中的最后一个“.comment\u time”还是“.comments\u container”中的最后一个“.comments\u time”？不管是哪种方式，我都建议花几分钟阅读——它给出了所有jQuery方法和选择器的列表，每个方法和选择器都有一句话的描述。（然后，您可以点击查看您感兴趣的任何内容的完整详细信息。）您正在查找

$（'comments\u container comment\u time'）

？您是指DOM中的最后一个“.comment\u time”还是“.comments\u container”中的最后一个“.comments\u time”？不管是哪种方式，我都建议花几分钟阅读——它给出了所有jQuery方法和选择器的列表，每个方法和选择器都有一句话的描述。（然后，您可以单击以获取您感兴趣的任何项目的完整详细信息。）