小编sta*_*tti的帖子

使用 jQuery '.each()' 在一组元素上的每个枚举中插入“暂停”的最佳/推荐方式是什么？

$( '.someClass' ).each( function() {
    $( this ).trigger( 'click' ); //fire some request that appends a new div on the body 
    //wait for div to be appended to the DOM.  perhaps use the pause here
    //execute code once the div has been appended 
});

我怎样才能选择tbody的孩子而不是他们的后代？例如,使用以下jQuery语句:

alert( $( '.someClass tbody tr' ).length );

使用下面的示例html将产生2的长度:

<div>
  <table class='someClass'>
    <tbody>
      <tr>
        <td>
          <span>cell 1-1</span>
            <table>
              <tbody>
                <tr class='level-2'>
                  <td>
                    <span>cell 1-2</span>
                    <table>
                      <tbody>
                        <tr class='level-3'>
                          <td><span>cell 1-3</span></td>
                        </tr>
                      </tbody>
                    </table>
                  </td>
                </tr>
              </tbody>
            </table>
          </td>
        </tr>
        <tr>
          <td>
            <span>cell 2-1</span>
            <table>
              <tbody>
                <tr class='level-2'>
                  <td>
                    <span>cell 2-2</span>
                      <table>
                        <tbody>
                          <tr class='level-3'>
                            <td><span>cell 2-3</span></td>
                          </tr>
                        </tbody>
                      </table>
                    </td>
                  </tr>
                </tbody>
              </table>
            </td>
          </tr>
        </tbody>
      </table>
    </div>