Question

I have a table:

<table>
<thead>
    <tr>
        <td>some1</td>
          ......
        <td>some2</td>
        <th>count</th>
        <th>EditCount</th>
    </tr>
</thead>
<tbody>
    <tr>
        <td>some1</td>
          ......
        <td>some2</td>
        <td>25</td>
        <td><input type='text' value='1'/></td>
   </tr>
   <tr>
        <td>some1</td>
          ......
        <td>some2</td>
        <td>35</td>
        <td><input type='text' value='3'/></td>
   </tr>

How to get td value in left side from input in each row, for example when user clicked on this input?

Answer 1

(Note from “left side” i took this to mean the first td ie the leftmost one)

Try this :

$('input[type=text]' ).change(function() {
  var firsttd = $('td:first', $(this).parents('tr'));
});

Uses the .change() method in jQuery (this could be focus or blur etc). Uses the selector td:first to get the first td and sets the context to the current objects (input') parenttr`

Working example here

Update

To get the previous td (ie with values 25 or 35 use :

$('input[type=text]' ).change(function() {
  var prevtd = $(this).parent('td').prev('td');
});

This gets the .parent() td and then the .prev() td

Working example here