jQuery select column

I wo开发者_开发知识库uld like to select all cells of the first column of a table. Can anyone please tell me the code.

Tried this..

$('.sortable tr:nth-child(1)');    // getting entire row.

This (fairly verbose) selector should work:

$(".sortable tr > :nth-child(1)")

If you want another column, simply change the index to nth-child to something other than 1.

This will select both td (data) and th (header) cells, btw.

$(".sortable tr > :nth-child(1)")
.css("background-color", "yellow");

<table class="sortable">
  <tr> <th>   A </th> <th>   B </th> <th>   C </th> </tr>
  <tr> <td>   1 </td> <td>   2 </td> <td>   3 </td> </tr>
  <tr> <td>  10 </td> <td>  20 </td> <td>  30 </td> </tr>
  <tr> <td> 100 </td> <td> 200 </td> <td> 300 </td> </tr>
</table>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

$('.sortable td:first-child'); 

$('.sortable tr td:first').each(function(){ 
     alert($(this).text());
});