我有一个包含一些行的表，有点难以向您展示所有代码，但我会举一个例子：
<tr id="<?=$row['slug'];?>" class="gradeX <? if($row['parent_name']!=''){?>child<?}?>">
<td id="<?=$row['id'];?>" class="expand-parent"><? if($row['parent_name']==''){?>+<?}?></td>
<td><span id="<?=$row['id'];?>" class="edit-title"><?=$row['title'];?></td>
<td><span id="<?=$row['id'];?>" class="edit-slug"><?=$row['slug'];?></td>
<td><span id="<?=$row['id'];?>" class="edit-parent"><? if($row['parent_name']){ ?><?=$row['parent_name'];?> (ID: <?=$row['parent'];?>)<? } ?></td>
<td id="<?=$row['id'];?>" class="edit-uri"><?=$row['uri'];?></td>
<td id="<?=$row['id'];?>" class="edit-perms"><?=$row['perms'];?></td>
<td>
<div class="toggle-button" data-toggleButton-style-enabled="success">
<input type="checkbox" class="toggle-perm" id="<?=$row['id'];?>"<?=$cl;?> />
</div>
</td>
</tr>
这是一个循环，产生几百个“父”行，以及几千个“子”行。
我有一些看起来像这样的jquery：
$('.child').toggle();
$('.expand-parent').click(function(){
$(this).closest(".child").toggle();
});
基本上我要做的是，一旦你触发.expand-parent点击功能，它就会切换（显示）属于被点击的父项的子项。告诉jQuery哪个tr个孩子属于每个tr父母并进行相应切换的最佳方法是什么？
修改
HTML示例输出：
<!-- Table row -->
<tr id="pp" class="gradeX ">
<td id="1" class="expand-parent">+</td>
<td><span id="1" class="edit-title">Prospector</td>
<td><span id="1" class="edit-slug">pp</td>
<td><span id="1" class="edit-parent"></td>
<td id="1" class="edit-uri"></td>
<td id="1" class="edit-perms"></td>
<td>
<div class="toggle-button" data-toggleButton-style-enabled="success">
<input type="checkbox" class="toggle-perm" id="1" checked />
</div>
</td>
</tr>
<!-- // Table row END -->
<!-- Table row -->
<tr id="pp_data_providers" class="gradeX child">
<td id="2" class="expand-parent"></td>
<td><span id="2" class="edit-title">Data Providers</td>
<td><span id="2" class="edit-slug">pp_data_providers</td>
<td><span id="2" class="edit-parent">Prospector (ID: 1)</td>
<td id="2" class="edit-uri">/plugins/plg_prospector/prospect_providers.php</td>
<td id="2" class="edit-perms"></td>
<td>
<div class="toggle-button" data-toggleButton-style-enabled="success">
<input type="checkbox" class="toggle-perm" id="2" checked />
</div>
</td>
</tr>
<!-- // Table row END -->
<!-- Table row -->
<tr id="pp_provider_lists" class="gradeX child">
<td id="3" class="expand-parent"></td>
<td><span id="3" class="edit-title">Provider Lists</td>
<td><span id="3" class="edit-slug">pp_provider_lists</td>
<td><span id="3" class="edit-parent">Prospector (ID: 1)</td>
<td id="3" class="edit-uri">/plugins/plg_prospector/prospect_lists.php</td>
<td id="3" class="edit-perms"></td>
<td>
<div class="toggle-button" data-toggleButton-style-enabled="success">
<input type="checkbox" class="toggle-perm" id="3" checked />
</div>
</td>
</tr>
<!-- // Table row END -->
<!-- Table row -->
<tr id="pp_partners" class="gradeX child">
<td id="4" class="expand-parent"></td>
<td><span id="4" class="edit-title">Partners</td>
<td><span id="4" class="edit-slug">pp_partners</td>
<td><span id="4" class="edit-parent">Prospector (ID: 1)</td>
<td id="4" class="edit-uri">/plugins/plg_prospector/prospect_partners.php</td>
<td id="4" class="edit-perms"></td>
<td>
<div class="toggle-button" data-toggleButton-style-enabled="success">
<input type="checkbox" class="toggle-perm" id="4" checked />
</div>
</td>
</tr>
<!-- // Table row END -->
<!-- Table row -->
<tr id="pp_reporting" class="gradeX child">
<td id="5" class="expand-parent"></td>
<td><span id="5" class="edit-title">Reporting</td>
<td><span id="5" class="edit-slug">pp_reporting</td>
<td><span id="5" class="edit-parent">Prospector (ID: 1)</td>
<td id="5" class="edit-uri"></td>
<td id="5" class="edit-perms"></td>
<td>
<div class="toggle-button" data-toggleButton-style-enabled="success">
<input type="checkbox" class="toggle-perm" id="5" />
</div>
</td>
</tr>
<!-- // Table row END -->
<!-- Table row -->
<tr id="pp_campaigns" class="gradeX child">
<td id="6" class="expand-parent"></td>
<td><span id="6" class="edit-title">Campaigns</td>
<td><span id="6" class="edit-slug">pp_campaigns</td>
<td><span id="6" class="edit-parent">Prospector (ID: 1)</td>
<td id="6" class="edit-uri">/plugins/plg_prospector/prospect_campaigns.php</td>
<td id="6" class="edit-perms"></td>
<td>
<div class="toggle-button" data-toggleButton-style-enabled="success">
<input type="checkbox" class="toggle-perm" id="6" checked />
</div>
</td>
</tr>
<!-- // Table row END -->
<!-- Table row -->
<tr id="cbm" class="gradeX ">
<td id="7" class="expand-parent">+</td>
<td><span id="7" class="edit-title">CBM</td>
<td><span id="7" class="edit-slug">cbm</td>
<td><span id="7" class="edit-parent"></td>
<td id="7" class="edit-uri"></td>
<td id="7" class="edit-perms"></td>
<td>
<div class="toggle-button" data-toggleButton-style-enabled="success">
<input type="checkbox" class="toggle-perm" id="7" checked />
</div>
</td>
</tr>
<!-- // Table row END -->
答案 0 :(得分：1)
在有父项的行上，我会添加一个包含父ID的属性。
示例：
<tr id="cbm" class="gradeX" data-parentid="1">
然后你可以像这样编写jQuery事件：
var $this = $(this);
var id = $this.attr('id');
$(this).parents('table').find('tr[data-parentid='+id+']').toggle();
注意： parent（'table'）遍历table元素 find（..）找到属性data-parentid设置为id的所有tr元素。
拥有多个具有相同ID的元素是违法的，所以我会摆脱它们。最干净的方法是将它移动到tr元素。