我试图在单击“头”时隐藏“arrow_o”,但它不起作用。jquery“孩子”在表中不起作用吗?
html
<thead class="thead">
  <tr>
    <th>
      <div class="arrow_o"></div>
    </th>
  </tr>
</thead>
js
$(document).ready(function() {
  $('.thead').click(function() {
    $(this).children('.arrow_o').hide();
  });
});