django js 实现表格动态标序号的实例代码

<table class="table table-striped">
 <thead>
 <tr class="key_words_head">
 <th>序号</th>
 <th>类目</th>
 <th>关键词</th>
 <th>操作</th>
 </tr>
 </thead>
 <tbody id="key_words_body">
 {% for keywords in classify_keywords_obj %}
 <tr class="key_words_tbody">
 <td id="td_num"></td>
 <td id="hide_id">{{ keywords.id }}</td>
 <td id="td_classify">{{ keywords.classify.classify_name }}</td>
 <td id="td_keywords">{{ keywords.keywords }}</td>
 <td><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" onclick="show_change_model('{{ keywords.id }}')">编辑</a>
 <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" style="color: red" onclick="del_settings('{{ keywords.id }}',this)">删除</a></td>
 </tr>
 {% endfor %}
 </tbody>
 </table>

<script>
 function xu_hao() {
 var oTable = $('tr.key_words_tbody').length;
 for (var i = 0; i < oTable + 1; i++) {
 $('tr.key_words_tbody').eq(i).children("td#td_num").empty();
 $('tr.key_words_tbody').eq(i).children("td#td_num").append(i + 1);
 }
 }
 </script>