有一个html表如下（行数变化）..
<table id="issuetable">
<tbody>
<tr id="issuerow13210" rel="13210" data-issuekey="Ticket-215" class="issuerow focused">
<td class="issuetype"><a class="hidden-link issue-link" data-issue-key="Ticket-215" href="/browse/Ticket-215" tabindex="-1" title="Ticket-215"></a> <a class="issue-link" data-issue-key="Ticket-215" href="/browse/Ticket-215"> <img src="/servicedesk/issue-type-icons?icon=it-help" height="16" width="16" border="0" align="absmiddle" alt="IT Help" title="IT Help - For general IT problems and questions."></a></td>
<td class="issuekey">
<a class="issue-link" data-issue-key="Ticket-215" href="/browse/Ticket-215">Ticket-215</a>
</td>
<a class="issue-link" data-issue-key="Ticket-215" href="/browse/Ticket-215"></a>
<td class="issue_actions"> <div class="action-dropdown aui-dd-parent">
<a class="aui-dropdown-trigger aui-dd-link icon-tools-small issue-actions-trigger trigger-happy" id="actions_13210" title="Actions (Type . to access issue actions)" href="/rest/api/1.0/issues/13210/ActionsAndOperations?atl_token=B3EQ-V14Z-C9T2-CSQ1|a8670a0d83de2caedc2f08b4935ffa3acc8d8488|lin">
<span>
<em>Actions</em>
</span>
</a>
</div>
</td>
</tr>
<tr id="issuerow13209" rel="13209" data-issuekey="Ticket-214" class="issuerow">
<td class="issuetype"><a class="hidden-link issue-link" data-issue-key="Ticket-214" href="/browse/Ticket-214" tabindex="-1" title="Ticket-214"></a> <a class="issue-link" data-issue-key="Ticket-214" href="/browse/Ticket-214"> <img src="/servicedesk/issue-type-icons?icon=it-help" height="16" width="16" border="0" align="absmiddle" alt="Task" title="Task"></a></td>
<td class="issuekey">
<a class="issue-link" data-issue-key="Ticket-214" href="/browse/Ticket-214">Ticket-214</a>
</td>
<td class="issue_actions"> <div class="action-dropdown aui-dd-parent">
<a class="aui-dropdown-trigger aui-dd-link icon-tools-small issue-actions-trigger trigger-happy" id="actions_13209" title="Actions (Type . to access issue actions)" href="/rest/api/1.0/issues/13209/ActionsAndOperations?atl_token=B3EQ-V14Z-C9T2-CSQ1|a8670a0d83de2caedc2f08b4935ffa3acc8d8488|lin">
<span>
<em>Actions</em>
</span>
</a>
</div>
</td>
</tr>
</tbody>
</table>
如果页面完成加载以迭代每一行并且只有当行包含alt =“IT帮助”的图像时才删除单元格“issue_actions”，我该如何使用javascript？
答案 0 :(得分：1)
使用伪选择器:has，然后找到要删除的元素：
$('tr:has(img[alt="IT Help"]) .issue_actions').remove();
答案 1 :(得分：1)
我自己的建议是：
$('img[alt="IT Help"]').closest('td').siblings('.issue_actions').empty();
使用.empty()会删除<td>元素的内容，但不会删除<td>本身，这样可以防止表格布局因具有不同细胞数的行而失真
$('img[alt="IT Help"]').closest('td').siblings('.issue_actions').empty();img[alt="IT Help"] {
box-shadow: 0 0 0 5px #f00;
}
td {
border: 1px solid #000;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tbody>
<tr>
<td>
<img src="http://placekitten.com/150/150/" alt="IT Help" />
</td>
<td class="issue_actions">This shouldn't be visible</td>
</tr>
<tr>
<td>
<img src="http://lorempixel.com/150/150/people" alt="Not IT Help" />
</td>
<td class="issue_actions">This should be visible</td>
</tr>
<tr>
<td>
<img src="http://placekitten.com/150/150/" alt="IT Help" />
</td>
<td class="issue_actions">This shouldn't be visible</td>
</tr>
</tbody>
</table>
以下使用remove()，它演示了轻微的视觉问题：
$('img[alt="IT Help"]').closest('td').siblings('.issue_actions').remove();img[alt="IT Help"] {
box-shadow: 0 0 0 5px #f00;
}
td {
border: 1px solid #000;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tbody>
<tr>
<td>
<img src="http://placekitten.com/150/150/" alt="IT Help" />
</td>
<td class="issue_actions">This shouldn't be visible</td>
</tr>
<tr>
<td>
<img src="http://lorempixel.com/150/150/people" alt="Not IT Help" />
</td>
<td class="issue_actions">This should be visible</td>
</tr>
<tr>
<td>
<img src="http://placekitten.com/150/150/" alt="IT Help" />
</td>
<td class="issue_actions">This shouldn't be visible</td>
</tr>
</tbody>
</table>
参考文献：