jQuery addClass仅限于<td>，其中父<tr>具有特定的类

Question

so what i try to do is, to add a class to every element, where the parent has a specific class.

I tried this:

if ($('tr').hasClass('storno')) {
        $('tr > td').addClass('storno');
    }

and this is the html example:

<table>
  <tr class="storno">
    <td>test</td>
    <td>test2</td>
  </tr>
  <tr>
    <td>test</td>
    <td>test2</td>
  </tr>
</table>

i tried it also with some other code, but at this point, i dont know i can get it right.

Thank you very much in advance

Answer 1

$('tr.storno > td').addClass('storno');

Answer 2

you need to use the class selector along with descendent selector to do this

$('tr.storno td').addClass('storno');

Demo: Fiddle

Answer 3

做这个

$('tr.storno > td').addClass('storno');

Answer 4

在获取节点时，只需使用具有特定类的选择器：

$('tr.specificParentClass').children('td').addClass('tdClass');

Answer 5

在这里试试这个

$('tr.storno').find('td').addClass('storno');

Answer 6

if ($('tr').hasClass('storno')) {
    $(this).find('td').addClass('storno');
}