Question

如果我拥有的唯一信息是哪个tr包含带按钮的td，我如何获取dataTable表中按钮的id。有多个td，按钮可能不是第一个。我需要的按钮ID是“.delete_email”，请注意，可能有多个具有相同类名的按钮ID。

我试过了：

 var id = $('#view_all_emails1').DataTable().$('tr.selected td:nth-child(5) button[".delete_email"]').attr("id");

但这会导致错误：

未捕获错误：语法错误，无法识别的表达式：tr.selected td：nth-child（5）button [“。delete_email”]

html：

 <tr>
      <td>Wed 13-07-16</td>
      <td><a href="mailto:?????@?????.???.??">????????</a></td>
      <td><a href="index.php?a=em&id=5&ebox=1&et=1"  onClick="OpenEmail(5); return false;">
      <div class="visible-lg hidden-md hidden-sm hidden-xs" style="color:#06F;">The quick brown fox jumps over the lazy dog!</div>
      <div class="visible-md hidden-lg hidden-sm hidden-xs" style="color:#06F;">The quick brown fox jumps over the lazy dog!</div>
      <div class="visible-sm hidden-lg hidden-md hidden-xs" style="color:#06F;">The quick brown fox jumps over the lazy dog!</div>
      <div class="visible-xs hidden-lg hidden-md hidden-sm" style="color:#06F;">The quick brown fox<br />jumps over the lazy<br />dog! </div></a></td>
      <td>enquiries</td>
      <td><span class="octicon octicon-mail-read" title="Read!"></span></td>
      <td>
      <input type='hidden' id='this_id' name='this_id' value='5'/><input type='hidden' id='et' name='et' value='1'/><span class="input-group-btn"><button type="button" id="4:5" name="delete_email" class="delete_email btn btn-danger btn-xs" title="Delete this email!"><span class="glyphicon glyphicon-trash"></span></button></span></td>
      <td>2.1<small>kb</small></td>
 </tr>

Answer 1

为什么不这样？

＆＃39; delete_email＆＃39;作为名称

bro

或

＆＃39; delete_email＆＃39;作为班级

var id = $('#view_all_emails1 tr.selected input button[name="delete_email"]').attr('id');

Answer 2

我不知道您为什么需要通过DataTable API来获取此值。

var id = $('#view_all_emails1 tr.selected .delete_email').attr('id');

jquery获取已知tr的td内的按钮的id

2 个答案: