如何获得动态的html-table-content

This is the output of one of my file

<table>
<tr>
   <td> Description 1 </td>  <td> Content 1 </td>
</tr>
<tr>
   <td> Description 2 </td>  <td> Content 2 </td>
</tr>
<tr>
   <td> Description 3 </td>  <td> Content 3 </td>
</tr>

I want to get the content of Description x with php and then I want to read out the Content x. One of my problem is, that before grapping the content I don't know how many description-td's I have.

Should DOM / getElementsBy ... work for my problem?

Best regards, Susan

Here you have a solution with JQUERY. Try if yourself In this example we show in an alert dialog the content of the description number 3.

HTML:

<table id="mytable">
    <tr>
        <td> Description 1 </td>  <td> Content 1 </td>
    </tr>
    <tr>
        <td> Description 2 </td>  <td> Content 2 </td>
    </tr>
    <tr>
        <td> Description 3 </td>  <td> Content 3 </td>
    </tr>
</table>

JQUERY:

// Search content of description number 3
$(document).ready(extractContent(3));

function extractContent(num) {

    $('td', $('#mytable')).each(function() {
       // The text in the first column must match " Description num "
       if ($(this).text() == " Description " + num + " ")
           alert("Content found: "+$(this).next().text());
    });
}