jquery - 尝试使用 jQuery 到达第 2 表第 7 行第 1 td

Question

我正在尝试到达 div 中的第 2 个表第 7 行第 1 个 td。

我试过了

$('#WebPartWPQ1 table:first table:first tr:nth-child(6) td:first').html('test')

但它什么也没显示

<div id='WebPartWPQ1'>
  ....
  ....
  <table>
     <tbody>
        <tr>
          <td>
            <span>
                ....
                .....
                <table>
                  <tbody>
                    ...
                    <tr> //7th row
                       <td> //1st td
                          <h3>
                            <nobr>
                                 This value has to change
                            </nobr>
                          </h3>
                        </td>

如何解决？

Answer 1

.nth-child()

Description: Selects all elements that are the nth-child of their parent.

index: The index of each child to match, starting with 1, the string even or odd, or an equation ( eg. :nth-child(even), :nth-child(4n) )

1. :nth-child() 以 1 开始，将 :nth-child(6) 更改为 :nth-child(7)。
2. $('#WebPartWPQ1 table table tr:nth-child(7) td:first').html('test') 使用此选择器。