SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<table id="myTable">
    <tr>
        <th>S/N</th>
        <th>Name</th>
        <th>Result</th>
        <th>Action</th>
</tr>
<tr>
    <td>1</td>
    <td>Mike</td>
    <td>Passed</td>
    <td></td>
</tr>
<tr>
    <td>2</td>
    <td>Mark</td>
    <td>Failed</td>
    <td></td>
</tr>
<tr>
    <td>2</td>
    <td>Mary</td>
    <td>Failed</td>
    <td></td>
    </tr>
</table>

CSS

td, th { padding: 0 20px; text-align: center; }
.failed { color: red; }

JavaScript

$("#myTable td:nth-child(3):contains('Failed')").addClass("failed")
       .next().append("<a href='#'>Retry</a>");